[{"data":1,"prerenderedAt":2753},["ShallowReactive",2],{"page-\u002Fadvanced-input-parsing-user-experience\u002Finteractive-terminal-ui-with-rich\u002Flive-dashboards-with-rich-live\u002F":3,"content-directory":2206},{"id":4,"title":5,"body":6,"date":2191,"description":2192,"difficulty":2193,"draft":2194,"extension":2195,"meta":2196,"navigation":122,"path":2197,"seo":2198,"stem":2199,"tags":2200,"updated":2191,"__hash__":2205},"content\u002Fadvanced-input-parsing-user-experience\u002Finteractive-terminal-ui-with-rich\u002Flive-dashboards-with-rich-live\u002Findex.md","Live Dashboards with Rich Live in Python CLIs",{"type":7,"value":8,"toc":2171},"minimark",[9,24,29,43,47,51,77,81,1037,1040,1225,1230,1244,1261,1273,1279,1282,1286,1289,1306,1310,1370,1374,1377,2012,2019,2023,2031,2035,2039,2060,2064,2082,2086,2095,2099,2106,2110,2117,2121,2131,2135,2167],[10,11,12,13,17,18,23],"p",{},"A deploy that rolls out across five regions, a batch of twenty migrations, a test run over a dozen services: when several things progress at once, a single progress bar is not enough and a scrolling log is too much. What people want is a small table that updates in place — one row per task with its state, progress and elapsed time — and that stays on screen as a summary when everything is done. Rich's ",[14,15,16],"code",{},"Live"," display does exactly that inside an ordinary command, without a full-screen TUI. This guide builds such a dashboard, keeps rendering separate from data so it is testable, makes it fall back to plain log lines when there is no terminal, and covers the details that make live displays behave: refresh rates, printing while live, and Ctrl+C. It belongs to the ",[19,20,22],"a",{"href":21},"\u002Fadvanced-input-parsing-user-experience\u002Finteractive-terminal-ui-with-rich\u002F","interactive terminal UI with Rich topic",".",[25,26,28],"h2",{"id":27},"prerequisites","Prerequisites",[30,31,32,36],"ul",{},[33,34,35],"li",{},"Python 3.10+ and Rich 13+ (included with Typer).",[33,37,38,39,23],{},"A source of status for several concurrent tasks — an API to poll, or results from a thread pool as in ",[19,40,42],{"href":41},"\u002Fcli-runtime-systems-integration\u002Fconcurrency-and-async-in-python-clis\u002Fparallelising-cli-work-with-thread-pools\u002F","parallelising CLI work with thread pools",[25,44,46],{"id":45},"how-live-works","How Live works",[48,49],"inline-diagram",{"name":50},"lv-loop",[10,52,53,55,56,60,61,64,65,68,69,72,73,76],{},[14,54,16],{}," takes over a region of the terminal — not the whole screen — and redraws a renderable (a table, a panel, a group of them) in that region, several times a second. Your code fetches new data, builds a ",[57,58,59],"strong",{},"new"," renderable and hands it to ",[14,62,63],{},"live.update()",". When the ",[14,66,67],{},"with"," block ends, the last frame stays in the scrollback as a permanent summary (unless ",[14,70,71],{},"transient=True",", which erases it). Everything printed through the live console appears ",[57,74,75],{},"above"," the display, so log messages and the dashboard coexist.",[25,78,80],{"id":79},"the-recipe","The recipe",[82,83,88],"pre",{"className":84,"code":85,"language":86,"meta":87,"style":87},"language-python shiki shiki-themes github-light github-dark","# src\u002Fmytool\u002Fdashboard.py\nfrom __future__ import annotations\n\nimport sys\nimport time\nfrom collections.abc import Callable\nfrom dataclasses import dataclass\n\nfrom rich.console import Console\nfrom rich.live import Live\nfrom rich.table import Table\n\n\n@dataclass(frozen=True)\nclass RegionState:\n    region: str\n    state: str          # waiting | rolling | done | failed\n    done: int\n    total: int\n    elapsed: float | None\n\n\nSTYLE = {\"waiting\": \"dim\", \"rolling\": \"yellow\", \"done\": \"green\", \"failed\": \"bold red\"}\n\n\ndef render(states: list[RegionState]) -> Table:\n    \"\"\"Pure function: data in, renderable out. Easy to test and reuse.\"\"\"\n    table = Table(\"REGION\", \"STATE\", \"PROGRESS\", \"ELAPSED\", box=None, header_style=\"bold\")\n    for s in states:\n        elapsed = \"-\" if s.elapsed is None else f\"{int(s.elapsed \u002F\u002F 60)}:{int(s.elapsed % 60):02d}\"\n        table.add_row(s.region, f\"[{STYLE[s.state]}]{s.state}[\u002F]\", f\"{s.done}\u002F{s.total}\", elapsed)\n    return table\n\n\ndef finished(states: list[RegionState]) -> bool:\n    return all(s.state in (\"done\", \"failed\") for s in states)\n\n\ndef watch(fetch: Callable[[], list[RegionState]], *, interval: float = 1.0,\n          console: Console | None = None, sleep: Callable[[float], None] = time.sleep) -> list[RegionState]:\n    \"\"\"Redraw in place on a terminal; print one line per change everywhere else.\"\"\"\n    console = console or Console()\n    states = fetch()\n    if console.is_terminal:\n        with Live(render(states), console=console, refresh_per_second=4, transient=False) as live:\n            while not finished(states):\n                sleep(interval)\n                states = fetch()\n                live.update(render(states))\n        return states\n    last: dict[str, str] = {}\n    while True:\n        for s in states:\n            if last.get(s.region) != s.state:\n                print(f\"{s.region}: {s.state} ({s.done}\u002F{s.total})\", file=sys.stderr, flush=True)\n                last[s.region] = s.state\n        if finished(states):\n            return states\n        sleep(interval)\n        states = fetch()\n","python","",[14,89,90,99,117,124,133,141,154,167,172,185,198,211,216,221,244,256,265,277,286,294,309,314,319,375,380,385,397,403,454,469,541,603,612,617,622,638,673,678,683,710,743,749,766,777,786,829,841,847,857,863,872,891,902,914,929,994,1005,1013,1021,1027],{"__ignoreMap":87},[91,92,95],"span",{"class":93,"line":94},"line",1,[91,96,98],{"class":97},"sJ8bj","# src\u002Fmytool\u002Fdashboard.py\n",[91,100,102,106,110,113],{"class":93,"line":101},2,[91,103,105],{"class":104},"szBVR","from",[91,107,109],{"class":108},"sj4cs"," __future__",[91,111,112],{"class":104}," import",[91,114,116],{"class":115},"sVt8B"," annotations\n",[91,118,120],{"class":93,"line":119},3,[91,121,123],{"emptyLinePlaceholder":122},true,"\n",[91,125,127,130],{"class":93,"line":126},4,[91,128,129],{"class":104},"import",[91,131,132],{"class":115}," sys\n",[91,134,136,138],{"class":93,"line":135},5,[91,137,129],{"class":104},[91,139,140],{"class":115}," time\n",[91,142,144,146,149,151],{"class":93,"line":143},6,[91,145,105],{"class":104},[91,147,148],{"class":115}," collections.abc ",[91,150,129],{"class":104},[91,152,153],{"class":115}," Callable\n",[91,155,157,159,162,164],{"class":93,"line":156},7,[91,158,105],{"class":104},[91,160,161],{"class":115}," dataclasses ",[91,163,129],{"class":104},[91,165,166],{"class":115}," dataclass\n",[91,168,170],{"class":93,"line":169},8,[91,171,123],{"emptyLinePlaceholder":122},[91,173,175,177,180,182],{"class":93,"line":174},9,[91,176,105],{"class":104},[91,178,179],{"class":115}," rich.console ",[91,181,129],{"class":104},[91,183,184],{"class":115}," Console\n",[91,186,188,190,193,195],{"class":93,"line":187},10,[91,189,105],{"class":104},[91,191,192],{"class":115}," rich.live ",[91,194,129],{"class":104},[91,196,197],{"class":115}," Live\n",[91,199,201,203,206,208],{"class":93,"line":200},11,[91,202,105],{"class":104},[91,204,205],{"class":115}," rich.table ",[91,207,129],{"class":104},[91,209,210],{"class":115}," Table\n",[91,212,214],{"class":93,"line":213},12,[91,215,123],{"emptyLinePlaceholder":122},[91,217,219],{"class":93,"line":218},13,[91,220,123],{"emptyLinePlaceholder":122},[91,222,224,228,231,235,238,241],{"class":93,"line":223},14,[91,225,227],{"class":226},"sScJk","@dataclass",[91,229,230],{"class":115},"(",[91,232,234],{"class":233},"s4XuR","frozen",[91,236,237],{"class":104},"=",[91,239,240],{"class":108},"True",[91,242,243],{"class":115},")\n",[91,245,247,250,253],{"class":93,"line":246},15,[91,248,249],{"class":104},"class",[91,251,252],{"class":226}," RegionState",[91,254,255],{"class":115},":\n",[91,257,259,262],{"class":93,"line":258},16,[91,260,261],{"class":115},"    region: ",[91,263,264],{"class":108},"str\n",[91,266,268,271,274],{"class":93,"line":267},17,[91,269,270],{"class":115},"    state: ",[91,272,273],{"class":108},"str",[91,275,276],{"class":97},"          # waiting | rolling | done | failed\n",[91,278,280,283],{"class":93,"line":279},18,[91,281,282],{"class":115},"    done: ",[91,284,285],{"class":108},"int\n",[91,287,289,292],{"class":93,"line":288},19,[91,290,291],{"class":115},"    total: ",[91,293,285],{"class":108},[91,295,297,300,303,306],{"class":93,"line":296},20,[91,298,299],{"class":115},"    elapsed: ",[91,301,302],{"class":108},"float",[91,304,305],{"class":104}," |",[91,307,308],{"class":108}," None\n",[91,310,312],{"class":93,"line":311},21,[91,313,123],{"emptyLinePlaceholder":122},[91,315,317],{"class":93,"line":316},22,[91,318,123],{"emptyLinePlaceholder":122},[91,320,322,325,328,331,335,338,341,344,347,349,352,354,357,359,362,364,367,369,372],{"class":93,"line":321},23,[91,323,324],{"class":108},"STYLE",[91,326,327],{"class":104}," =",[91,329,330],{"class":115}," {",[91,332,334],{"class":333},"sZZnC","\"waiting\"",[91,336,337],{"class":115},": ",[91,339,340],{"class":333},"\"dim\"",[91,342,343],{"class":115},", ",[91,345,346],{"class":333},"\"rolling\"",[91,348,337],{"class":115},[91,350,351],{"class":333},"\"yellow\"",[91,353,343],{"class":115},[91,355,356],{"class":333},"\"done\"",[91,358,337],{"class":115},[91,360,361],{"class":333},"\"green\"",[91,363,343],{"class":115},[91,365,366],{"class":333},"\"failed\"",[91,368,337],{"class":115},[91,370,371],{"class":333},"\"bold red\"",[91,373,374],{"class":115},"}\n",[91,376,378],{"class":93,"line":377},24,[91,379,123],{"emptyLinePlaceholder":122},[91,381,383],{"class":93,"line":382},25,[91,384,123],{"emptyLinePlaceholder":122},[91,386,388,391,394],{"class":93,"line":387},26,[91,389,390],{"class":104},"def",[91,392,393],{"class":226}," render",[91,395,396],{"class":115},"(states: list[RegionState]) -> Table:\n",[91,398,400],{"class":93,"line":399},27,[91,401,402],{"class":333},"    \"\"\"Pure function: data in, renderable out. Easy to test and reuse.\"\"\"\n",[91,404,406,409,411,414,417,419,422,424,427,429,432,434,437,439,442,444,447,449,452],{"class":93,"line":405},28,[91,407,408],{"class":115},"    table ",[91,410,237],{"class":104},[91,412,413],{"class":115}," Table(",[91,415,416],{"class":333},"\"REGION\"",[91,418,343],{"class":115},[91,420,421],{"class":333},"\"STATE\"",[91,423,343],{"class":115},[91,425,426],{"class":333},"\"PROGRESS\"",[91,428,343],{"class":115},[91,430,431],{"class":333},"\"ELAPSED\"",[91,433,343],{"class":115},[91,435,436],{"class":233},"box",[91,438,237],{"class":104},[91,440,441],{"class":108},"None",[91,443,343],{"class":115},[91,445,446],{"class":233},"header_style",[91,448,237],{"class":104},[91,450,451],{"class":333},"\"bold\"",[91,453,243],{"class":115},[91,455,457,460,463,466],{"class":93,"line":456},29,[91,458,459],{"class":104},"    for",[91,461,462],{"class":115}," s ",[91,464,465],{"class":104},"in",[91,467,468],{"class":115}," states:\n",[91,470,472,475,477,480,483,486,489,492,495,498,501,504,507,510,513,516,519,522,524,526,529,531,533,536,538],{"class":93,"line":471},30,[91,473,474],{"class":115},"        elapsed ",[91,476,237],{"class":104},[91,478,479],{"class":333}," \"-\"",[91,481,482],{"class":104}," if",[91,484,485],{"class":115}," s.elapsed ",[91,487,488],{"class":104},"is",[91,490,491],{"class":108}," None",[91,493,494],{"class":104}," else",[91,496,497],{"class":104}," f",[91,499,500],{"class":333},"\"",[91,502,503],{"class":108},"{int",[91,505,506],{"class":115},"(s.elapsed ",[91,508,509],{"class":104},"\u002F\u002F",[91,511,512],{"class":108}," 60",[91,514,515],{"class":115},")",[91,517,518],{"class":108},"}",[91,520,521],{"class":333},":",[91,523,503],{"class":108},[91,525,506],{"class":115},[91,527,528],{"class":104},"%",[91,530,512],{"class":108},[91,532,515],{"class":115},[91,534,535],{"class":104},":02d",[91,537,518],{"class":108},[91,539,540],{"class":333},"\"\n",[91,542,544,547,550,553,556,559,561,564,567,570,572,575,577,579,581,583,586,588,591,593,596,598,600],{"class":93,"line":543},31,[91,545,546],{"class":115},"        table.add_row(s.region, ",[91,548,549],{"class":104},"f",[91,551,552],{"class":333},"\"[",[91,554,555],{"class":108},"{STYLE",[91,557,558],{"class":115},"[s.state]",[91,560,518],{"class":108},[91,562,563],{"class":333},"]",[91,565,566],{"class":108},"{",[91,568,569],{"class":115},"s.state",[91,571,518],{"class":108},[91,573,574],{"class":333},"[\u002F]\"",[91,576,343],{"class":115},[91,578,549],{"class":104},[91,580,500],{"class":333},[91,582,566],{"class":108},[91,584,585],{"class":115},"s.done",[91,587,518],{"class":108},[91,589,590],{"class":333},"\u002F",[91,592,566],{"class":108},[91,594,595],{"class":115},"s.total",[91,597,518],{"class":108},[91,599,500],{"class":333},[91,601,602],{"class":115},", elapsed)\n",[91,604,606,609],{"class":93,"line":605},32,[91,607,608],{"class":104},"    return",[91,610,611],{"class":115}," table\n",[91,613,615],{"class":93,"line":614},33,[91,616,123],{"emptyLinePlaceholder":122},[91,618,620],{"class":93,"line":619},34,[91,621,123],{"emptyLinePlaceholder":122},[91,623,625,627,630,633,636],{"class":93,"line":624},35,[91,626,390],{"class":104},[91,628,629],{"class":226}," finished",[91,631,632],{"class":115},"(states: list[RegionState]) -> ",[91,634,635],{"class":108},"bool",[91,637,255],{"class":115},[91,639,641,643,646,649,651,654,656,658,660,663,666,668,670],{"class":93,"line":640},36,[91,642,608],{"class":104},[91,644,645],{"class":108}," all",[91,647,648],{"class":115},"(s.state ",[91,650,465],{"class":104},[91,652,653],{"class":115}," (",[91,655,356],{"class":333},[91,657,343],{"class":115},[91,659,366],{"class":333},[91,661,662],{"class":115},") ",[91,664,665],{"class":104},"for",[91,667,462],{"class":115},[91,669,465],{"class":104},[91,671,672],{"class":115}," states)\n",[91,674,676],{"class":93,"line":675},37,[91,677,123],{"emptyLinePlaceholder":122},[91,679,681],{"class":93,"line":680},38,[91,682,123],{"emptyLinePlaceholder":122},[91,684,686,688,691,694,697,700,702,704,707],{"class":93,"line":685},39,[91,687,390],{"class":104},[91,689,690],{"class":226}," watch",[91,692,693],{"class":115},"(fetch: Callable[[], list[RegionState]], ",[91,695,696],{"class":104},"*",[91,698,699],{"class":115},", interval: ",[91,701,302],{"class":108},[91,703,327],{"class":104},[91,705,706],{"class":108}," 1.0",[91,708,709],{"class":115},",\n",[91,711,713,716,719,721,723,725,728,730,733,735,738,740],{"class":93,"line":712},40,[91,714,715],{"class":115},"          console: Console ",[91,717,718],{"class":104},"|",[91,720,491],{"class":108},[91,722,327],{"class":104},[91,724,491],{"class":108},[91,726,727],{"class":115},", sleep: Callable[[",[91,729,302],{"class":108},[91,731,732],{"class":115},"], ",[91,734,441],{"class":108},[91,736,737],{"class":115},"] ",[91,739,237],{"class":104},[91,741,742],{"class":115}," time.sleep) -> list[RegionState]:\n",[91,744,746],{"class":93,"line":745},41,[91,747,748],{"class":333},"    \"\"\"Redraw in place on a terminal; print one line per change everywhere else.\"\"\"\n",[91,750,752,755,757,760,763],{"class":93,"line":751},42,[91,753,754],{"class":115},"    console ",[91,756,237],{"class":104},[91,758,759],{"class":115}," console ",[91,761,762],{"class":104},"or",[91,764,765],{"class":115}," Console()\n",[91,767,769,772,774],{"class":93,"line":768},43,[91,770,771],{"class":115},"    states ",[91,773,237],{"class":104},[91,775,776],{"class":115}," fetch()\n",[91,778,780,783],{"class":93,"line":779},44,[91,781,782],{"class":104},"    if",[91,784,785],{"class":115}," console.is_terminal:\n",[91,787,789,792,795,798,800,803,806,808,811,813,816,818,821,823,826],{"class":93,"line":788},45,[91,790,791],{"class":104},"        with",[91,793,794],{"class":115}," Live(render(states), ",[91,796,797],{"class":233},"console",[91,799,237],{"class":104},[91,801,802],{"class":115},"console, ",[91,804,805],{"class":233},"refresh_per_second",[91,807,237],{"class":104},[91,809,810],{"class":108},"4",[91,812,343],{"class":115},[91,814,815],{"class":233},"transient",[91,817,237],{"class":104},[91,819,820],{"class":108},"False",[91,822,662],{"class":115},[91,824,825],{"class":104},"as",[91,827,828],{"class":115}," live:\n",[91,830,832,835,838],{"class":93,"line":831},46,[91,833,834],{"class":104},"            while",[91,836,837],{"class":104}," not",[91,839,840],{"class":115}," finished(states):\n",[91,842,844],{"class":93,"line":843},47,[91,845,846],{"class":115},"                sleep(interval)\n",[91,848,850,853,855],{"class":93,"line":849},48,[91,851,852],{"class":115},"                states ",[91,854,237],{"class":104},[91,856,776],{"class":115},[91,858,860],{"class":93,"line":859},49,[91,861,862],{"class":115},"                live.update(render(states))\n",[91,864,866,869],{"class":93,"line":865},50,[91,867,868],{"class":104},"        return",[91,870,871],{"class":115}," states\n",[91,873,875,878,880,882,884,886,888],{"class":93,"line":874},51,[91,876,877],{"class":115},"    last: dict[",[91,879,273],{"class":108},[91,881,343],{"class":115},[91,883,273],{"class":108},[91,885,737],{"class":115},[91,887,237],{"class":104},[91,889,890],{"class":115}," {}\n",[91,892,894,897,900],{"class":93,"line":893},52,[91,895,896],{"class":104},"    while",[91,898,899],{"class":108}," True",[91,901,255],{"class":115},[91,903,905,908,910,912],{"class":93,"line":904},53,[91,906,907],{"class":104},"        for",[91,909,462],{"class":115},[91,911,465],{"class":104},[91,913,468],{"class":115},[91,915,917,920,923,926],{"class":93,"line":916},54,[91,918,919],{"class":104},"            if",[91,921,922],{"class":115}," last.get(s.region) ",[91,924,925],{"class":104},"!=",[91,927,928],{"class":115}," s.state:\n",[91,930,932,935,937,939,941,943,946,948,950,952,954,956,958,960,962,964,966,968,970,972,975,977,980,982,985,988,990,992],{"class":93,"line":931},55,[91,933,934],{"class":108},"                print",[91,936,230],{"class":115},[91,938,549],{"class":104},[91,940,500],{"class":333},[91,942,566],{"class":108},[91,944,945],{"class":115},"s.region",[91,947,518],{"class":108},[91,949,337],{"class":333},[91,951,566],{"class":108},[91,953,569],{"class":115},[91,955,518],{"class":108},[91,957,653],{"class":333},[91,959,566],{"class":108},[91,961,585],{"class":115},[91,963,518],{"class":108},[91,965,590],{"class":333},[91,967,566],{"class":108},[91,969,595],{"class":115},[91,971,518],{"class":108},[91,973,974],{"class":333},")\"",[91,976,343],{"class":115},[91,978,979],{"class":233},"file",[91,981,237],{"class":104},[91,983,984],{"class":115},"sys.stderr, ",[91,986,987],{"class":233},"flush",[91,989,237],{"class":104},[91,991,240],{"class":108},[91,993,243],{"class":115},[91,995,997,1000,1002],{"class":93,"line":996},56,[91,998,999],{"class":115},"                last[s.region] ",[91,1001,237],{"class":104},[91,1003,1004],{"class":115}," s.state\n",[91,1006,1008,1011],{"class":93,"line":1007},57,[91,1009,1010],{"class":104},"        if",[91,1012,840],{"class":115},[91,1014,1016,1019],{"class":93,"line":1015},58,[91,1017,1018],{"class":104},"            return",[91,1020,871],{"class":115},[91,1022,1024],{"class":93,"line":1023},59,[91,1025,1026],{"class":115},"        sleep(interval)\n",[91,1028,1030,1033,1035],{"class":93,"line":1029},60,[91,1031,1032],{"class":115},"        states ",[91,1034,237],{"class":104},[91,1036,776],{"class":115},[10,1038,1039],{},"A command calls it with a function that returns the current state — polling an API, or reading results collected by worker threads:",[82,1041,1043],{"className":84,"code":1042,"language":86,"meta":87,"style":87},"import typer\n\nfrom mytool.dashboard import watch\n\napp = typer.Typer()\n\n\n@app.command()\ndef deploy(all_regions: bool = typer.Option(False, \"--all-regions\")) -> None:\n    \"\"\"Deploy and show progress per region.\"\"\"\n    job = start_rollout(all_regions)                 # returns a handle with .status()\n    final = watch(job.status, interval=2.0)\n    failed = [s.region for s in final if s.state == \"failed\"]\n    raise typer.Exit(1 if failed else 0)\n",[14,1044,1045,1052,1056,1068,1072,1082,1086,1090,1098,1129,1134,1147,1167,1201],{"__ignoreMap":87},[91,1046,1047,1049],{"class":93,"line":94},[91,1048,129],{"class":104},[91,1050,1051],{"class":115}," typer\n",[91,1053,1054],{"class":93,"line":101},[91,1055,123],{"emptyLinePlaceholder":122},[91,1057,1058,1060,1063,1065],{"class":93,"line":119},[91,1059,105],{"class":104},[91,1061,1062],{"class":115}," mytool.dashboard ",[91,1064,129],{"class":104},[91,1066,1067],{"class":115}," watch\n",[91,1069,1070],{"class":93,"line":126},[91,1071,123],{"emptyLinePlaceholder":122},[91,1073,1074,1077,1079],{"class":93,"line":135},[91,1075,1076],{"class":115},"app ",[91,1078,237],{"class":104},[91,1080,1081],{"class":115}," typer.Typer()\n",[91,1083,1084],{"class":93,"line":143},[91,1085,123],{"emptyLinePlaceholder":122},[91,1087,1088],{"class":93,"line":156},[91,1089,123],{"emptyLinePlaceholder":122},[91,1091,1092,1095],{"class":93,"line":169},[91,1093,1094],{"class":226},"@app.command",[91,1096,1097],{"class":115},"()\n",[91,1099,1100,1102,1105,1108,1110,1112,1115,1117,1119,1122,1125,1127],{"class":93,"line":174},[91,1101,390],{"class":104},[91,1103,1104],{"class":226}," deploy",[91,1106,1107],{"class":115},"(all_regions: ",[91,1109,635],{"class":108},[91,1111,327],{"class":104},[91,1113,1114],{"class":115}," typer.Option(",[91,1116,820],{"class":108},[91,1118,343],{"class":115},[91,1120,1121],{"class":333},"\"--all-regions\"",[91,1123,1124],{"class":115},")) -> ",[91,1126,441],{"class":108},[91,1128,255],{"class":115},[91,1130,1131],{"class":93,"line":187},[91,1132,1133],{"class":333},"    \"\"\"Deploy and show progress per region.\"\"\"\n",[91,1135,1136,1139,1141,1144],{"class":93,"line":200},[91,1137,1138],{"class":115},"    job ",[91,1140,237],{"class":104},[91,1142,1143],{"class":115}," start_rollout(all_regions)                 ",[91,1145,1146],{"class":97},"# returns a handle with .status()\n",[91,1148,1149,1152,1154,1157,1160,1162,1165],{"class":93,"line":213},[91,1150,1151],{"class":115},"    final ",[91,1153,237],{"class":104},[91,1155,1156],{"class":115}," watch(job.status, ",[91,1158,1159],{"class":233},"interval",[91,1161,237],{"class":104},[91,1163,1164],{"class":108},"2.0",[91,1166,243],{"class":115},[91,1168,1169,1172,1174,1177,1179,1181,1183,1186,1189,1192,1195,1198],{"class":93,"line":218},[91,1170,1171],{"class":115},"    failed ",[91,1173,237],{"class":104},[91,1175,1176],{"class":115}," [s.region ",[91,1178,665],{"class":104},[91,1180,462],{"class":115},[91,1182,465],{"class":104},[91,1184,1185],{"class":115}," final ",[91,1187,1188],{"class":104},"if",[91,1190,1191],{"class":115}," s.state ",[91,1193,1194],{"class":104},"==",[91,1196,1197],{"class":333}," \"failed\"",[91,1199,1200],{"class":115},"]\n",[91,1202,1203,1206,1209,1212,1214,1217,1220,1223],{"class":93,"line":223},[91,1204,1205],{"class":104},"    raise",[91,1207,1208],{"class":115}," typer.Exit(",[91,1210,1211],{"class":108},"1",[91,1213,482],{"class":104},[91,1215,1216],{"class":115}," failed ",[91,1218,1219],{"class":104},"else",[91,1221,1222],{"class":108}," 0",[91,1224,243],{"class":115},[1226,1227,1229],"h3",{"id":1228},"why-it-is-built-this-way","Why it is built this way",[10,1231,1232,1235,1236,1239,1240,1243],{},[57,1233,1234],{},"Render is a pure function."," ",[14,1237,1238],{},"render(states)"," turns data into a ",[14,1241,1242],{},"Table"," and does nothing else. Building a fresh renderable per tick avoids mutating a table while Rich is drawing it, and makes the visual logic testable without a terminal.",[10,1245,1246,1235,1249,1252,1253,1256,1257,23],{},[57,1247,1248],{},"One code path decides the mode.",[14,1250,1251],{},"console.is_terminal"," is false in pipes, CI logs and files. There, a live display would write a stream of redraws; instead the dashboard prints one line ",[57,1254,1255],{},"per state change",", which is exactly the information someone reading a log needs. The broader rules are in ",[19,1258,1260],{"href":1259},"\u002Fadvanced-input-parsing-user-experience\u002Fcross-platform-terminal-compatibility\u002Fdetecting-ci-environments-and-non-interactive-shells\u002F","detecting CI environments and non-interactive shells",[10,1262,1263,1235,1266,1269,1270,1272],{},[57,1264,1265],{},"Refresh rate is decoupled from polling.",[14,1267,1268],{},"refresh_per_second=4"," controls redrawing (spinners and elapsed times stay smooth); ",[14,1271,1159],{}," controls how often data is fetched — usually much less often, to be kind to the API.",[10,1274,1275,1278],{},[57,1276,1277],{},"Sleep is injected."," Tests pass a no-op sleep and a scripted fetch function, so the whole loop runs in milliseconds.",[48,1280],{"name":1281},"lv-terminal",[25,1283,1285],{"id":1284},"live-display-or-full-tui","Live display or full TUI?",[48,1287],{"name":1288},"lv-vs-tui",[10,1290,1291,1292,343,1295,1297,1298,1301,1302,23],{},"If the user only ",[57,1293,1294],{},"watches",[14,1296,16],{}," is enough and a fraction of the code of a TUI. The moment they need to ",[57,1299,1300],{},"act"," on the display — select a row, cancel a task, filter — a Textual application is the better tool; see ",[19,1303,1305],{"href":1304},"\u002Fadvanced-input-parsing-user-experience\u002Fbuilding-terminal-uis-with-textual\u002F","building terminal UIs with Textual",[25,1307,1309],{"id":1308},"ux-considerations","UX considerations",[30,1311,1312,1325,1341,1347,1360],{},[33,1313,1314,1317,1318,1321,1322,1324],{},[57,1315,1316],{},"Leave a summary."," With ",[14,1319,1320],{},"transient=False",", the final table remains after the command finishes — a free report of what happened. Use ",[14,1323,71],{}," only for purely transitional displays.",[33,1326,1327,1235,1330,1333,1334,1337,1338,1340],{},[57,1328,1329],{},"Print through the live console.",[14,1331,1332],{},"live.console.print(\"warning: ...\")"," puts messages above the table. Bare ",[14,1335,1336],{},"print()"," while a ",[14,1339,16],{}," is active corrupts the display.",[33,1342,1343,1346],{},[57,1344,1345],{},"Keep the table short."," A live region taller than the terminal cannot be redrawn in place and degrades into scrolling. For many tasks, show the active and failed ones plus a summary line (\"37 done, 2 failed, 11 waiting\").",[33,1348,1349,1352,1353,1355,1356,1359],{},[57,1350,1351],{},"Handle Ctrl+C."," Leaving the ",[14,1354,67],{}," block — including through ",[14,1357,1358],{},"KeyboardInterrupt"," — stops the display cleanly and leaves the last frame. Catch the interrupt in the command to report what was still running and exit 130.",[33,1361,1362,1365,1366,23],{},[57,1363,1364],{},"Colour is a hint, not the message."," The state column says \"failed\", not just red; see ",[19,1367,1369],{"href":1368},"\u002Fadvanced-input-parsing-user-experience\u002Fcross-platform-terminal-compatibility\u002Frespecting-no-color-and-force-color\u002F","respecting NO_COLOR and FORCE_COLOR",[25,1371,1373],{"id":1372},"testing-the-behaviour","Testing the behaviour",[10,1375,1376],{},"With rendering pure and fetch and sleep injected, every behaviour is testable: the table's content, the live loop running to completion, and the non-terminal fallback printing one line per change:",[82,1378,1380],{"className":84,"code":1379,"language":86,"meta":87,"style":87},"# tests\u002Ftest_dashboard.py\nimport io\n\nfrom rich.console import Console\n\nfrom mytool.dashboard import RegionState, render, watch\n\n\ndef scripted(*frames):\n    it = iter(frames)\n    last = []\n\n    def fetch():\n        nonlocal last\n        last = next(it, last)\n        return last\n    return fetch\n\n\nF1 = [RegionState(\"eu-west-1\", \"rolling\", 3, 10, 20.0), RegionState(\"us-east-1\", \"waiting\", 0, 10, None)]\nF2 = [RegionState(\"eu-west-1\", \"done\", 10, 10, 41.0), RegionState(\"us-east-1\", \"rolling\", 6, 10, 33.0)]\nF3 = [RegionState(\"eu-west-1\", \"done\", 10, 10, 41.0), RegionState(\"us-east-1\", \"done\", 10, 10, 52.0)]\n\n\ndef text_of(renderable) -> str:\n    console = Console(file=io.StringIO(), width=80, color_system=None)\n    console.print(renderable)\n    return console.file.getvalue()\n\n\ndef test_render_is_plain_data_to_table():\n    out = text_of(render(F2))\n    assert \"eu-west-1\" in out and \"10\u002F10\" in out and \"0:41\" in out\n\n\ndef test_terminal_mode_redraws_until_finished():\n    console = Console(file=io.StringIO(), force_terminal=True, width=80)\n    final = watch(scripted(F1, F2, F3), console=console, sleep=lambda s: None)\n    assert final == F3\n\n\ndef test_non_terminal_prints_one_line_per_change(capsys):\n    console = Console(file=io.StringIO(), force_terminal=False)\n    watch(scripted(F1, F2, F2, F3), console=console, sleep=lambda s: None)\n    lines = capsys.readouterr().err.splitlines()\n    assert lines == [\"eu-west-1: rolling (3\u002F10)\", \"us-east-1: waiting (0\u002F10)\",\n                     \"eu-west-1: done (10\u002F10)\", \"us-east-1: rolling (6\u002F10)\", \"us-east-1: done (10\u002F10)\"]\n",[14,1381,1382,1387,1394,1398,1408,1412,1423,1427,1431,1445,1458,1468,1472,1483,1491,1504,1510,1517,1521,1525,1583,1635,1685,1689,1693,1707,1742,1747,1754,1758,1762,1771,1781,1815,1819,1823,1832,1863,1891,1902,1906,1910,1920,1942,1963,1973,1995],{"__ignoreMap":87},[91,1383,1384],{"class":93,"line":94},[91,1385,1386],{"class":97},"# tests\u002Ftest_dashboard.py\n",[91,1388,1389,1391],{"class":93,"line":101},[91,1390,129],{"class":104},[91,1392,1393],{"class":115}," io\n",[91,1395,1396],{"class":93,"line":119},[91,1397,123],{"emptyLinePlaceholder":122},[91,1399,1400,1402,1404,1406],{"class":93,"line":126},[91,1401,105],{"class":104},[91,1403,179],{"class":115},[91,1405,129],{"class":104},[91,1407,184],{"class":115},[91,1409,1410],{"class":93,"line":135},[91,1411,123],{"emptyLinePlaceholder":122},[91,1413,1414,1416,1418,1420],{"class":93,"line":143},[91,1415,105],{"class":104},[91,1417,1062],{"class":115},[91,1419,129],{"class":104},[91,1421,1422],{"class":115}," RegionState, render, watch\n",[91,1424,1425],{"class":93,"line":156},[91,1426,123],{"emptyLinePlaceholder":122},[91,1428,1429],{"class":93,"line":169},[91,1430,123],{"emptyLinePlaceholder":122},[91,1432,1433,1435,1438,1440,1442],{"class":93,"line":174},[91,1434,390],{"class":104},[91,1436,1437],{"class":226}," scripted",[91,1439,230],{"class":115},[91,1441,696],{"class":104},[91,1443,1444],{"class":115},"frames):\n",[91,1446,1447,1450,1452,1455],{"class":93,"line":187},[91,1448,1449],{"class":115},"    it ",[91,1451,237],{"class":104},[91,1453,1454],{"class":108}," iter",[91,1456,1457],{"class":115},"(frames)\n",[91,1459,1460,1463,1465],{"class":93,"line":200},[91,1461,1462],{"class":115},"    last ",[91,1464,237],{"class":104},[91,1466,1467],{"class":115}," []\n",[91,1469,1470],{"class":93,"line":213},[91,1471,123],{"emptyLinePlaceholder":122},[91,1473,1474,1477,1480],{"class":93,"line":218},[91,1475,1476],{"class":104},"    def",[91,1478,1479],{"class":226}," fetch",[91,1481,1482],{"class":115},"():\n",[91,1484,1485,1488],{"class":93,"line":223},[91,1486,1487],{"class":104},"        nonlocal",[91,1489,1490],{"class":115}," last\n",[91,1492,1493,1496,1498,1501],{"class":93,"line":246},[91,1494,1495],{"class":115},"        last ",[91,1497,237],{"class":104},[91,1499,1500],{"class":108}," next",[91,1502,1503],{"class":115},"(it, last)\n",[91,1505,1506,1508],{"class":93,"line":258},[91,1507,868],{"class":104},[91,1509,1490],{"class":115},[91,1511,1512,1514],{"class":93,"line":267},[91,1513,608],{"class":104},[91,1515,1516],{"class":115}," fetch\n",[91,1518,1519],{"class":93,"line":279},[91,1520,123],{"emptyLinePlaceholder":122},[91,1522,1523],{"class":93,"line":288},[91,1524,123],{"emptyLinePlaceholder":122},[91,1526,1527,1530,1532,1535,1538,1540,1542,1544,1547,1549,1552,1554,1557,1560,1563,1565,1567,1569,1572,1574,1576,1578,1580],{"class":93,"line":296},[91,1528,1529],{"class":115},"F1 ",[91,1531,237],{"class":104},[91,1533,1534],{"class":115}," [RegionState(",[91,1536,1537],{"class":333},"\"eu-west-1\"",[91,1539,343],{"class":115},[91,1541,346],{"class":333},[91,1543,343],{"class":115},[91,1545,1546],{"class":108},"3",[91,1548,343],{"class":115},[91,1550,1551],{"class":108},"10",[91,1553,343],{"class":115},[91,1555,1556],{"class":108},"20.0",[91,1558,1559],{"class":115},"), RegionState(",[91,1561,1562],{"class":333},"\"us-east-1\"",[91,1564,343],{"class":115},[91,1566,334],{"class":333},[91,1568,343],{"class":115},[91,1570,1571],{"class":108},"0",[91,1573,343],{"class":115},[91,1575,1551],{"class":108},[91,1577,343],{"class":115},[91,1579,441],{"class":108},[91,1581,1582],{"class":115},")]\n",[91,1584,1585,1588,1590,1592,1594,1596,1598,1600,1602,1604,1606,1608,1611,1613,1615,1617,1619,1621,1624,1626,1628,1630,1633],{"class":93,"line":311},[91,1586,1587],{"class":115},"F2 ",[91,1589,237],{"class":104},[91,1591,1534],{"class":115},[91,1593,1537],{"class":333},[91,1595,343],{"class":115},[91,1597,356],{"class":333},[91,1599,343],{"class":115},[91,1601,1551],{"class":108},[91,1603,343],{"class":115},[91,1605,1551],{"class":108},[91,1607,343],{"class":115},[91,1609,1610],{"class":108},"41.0",[91,1612,1559],{"class":115},[91,1614,1562],{"class":333},[91,1616,343],{"class":115},[91,1618,346],{"class":333},[91,1620,343],{"class":115},[91,1622,1623],{"class":108},"6",[91,1625,343],{"class":115},[91,1627,1551],{"class":108},[91,1629,343],{"class":115},[91,1631,1632],{"class":108},"33.0",[91,1634,1582],{"class":115},[91,1636,1637,1640,1642,1644,1646,1648,1650,1652,1654,1656,1658,1660,1662,1664,1666,1668,1670,1672,1674,1676,1678,1680,1683],{"class":93,"line":316},[91,1638,1639],{"class":115},"F3 ",[91,1641,237],{"class":104},[91,1643,1534],{"class":115},[91,1645,1537],{"class":333},[91,1647,343],{"class":115},[91,1649,356],{"class":333},[91,1651,343],{"class":115},[91,1653,1551],{"class":108},[91,1655,343],{"class":115},[91,1657,1551],{"class":108},[91,1659,343],{"class":115},[91,1661,1610],{"class":108},[91,1663,1559],{"class":115},[91,1665,1562],{"class":333},[91,1667,343],{"class":115},[91,1669,356],{"class":333},[91,1671,343],{"class":115},[91,1673,1551],{"class":108},[91,1675,343],{"class":115},[91,1677,1551],{"class":108},[91,1679,343],{"class":115},[91,1681,1682],{"class":108},"52.0",[91,1684,1582],{"class":115},[91,1686,1687],{"class":93,"line":321},[91,1688,123],{"emptyLinePlaceholder":122},[91,1690,1691],{"class":93,"line":377},[91,1692,123],{"emptyLinePlaceholder":122},[91,1694,1695,1697,1700,1703,1705],{"class":93,"line":382},[91,1696,390],{"class":104},[91,1698,1699],{"class":226}," text_of",[91,1701,1702],{"class":115},"(renderable) -> ",[91,1704,273],{"class":108},[91,1706,255],{"class":115},[91,1708,1709,1711,1713,1716,1718,1720,1723,1726,1728,1731,1733,1736,1738,1740],{"class":93,"line":387},[91,1710,754],{"class":115},[91,1712,237],{"class":104},[91,1714,1715],{"class":115}," Console(",[91,1717,979],{"class":233},[91,1719,237],{"class":104},[91,1721,1722],{"class":115},"io.StringIO(), ",[91,1724,1725],{"class":233},"width",[91,1727,237],{"class":104},[91,1729,1730],{"class":108},"80",[91,1732,343],{"class":115},[91,1734,1735],{"class":233},"color_system",[91,1737,237],{"class":104},[91,1739,441],{"class":108},[91,1741,243],{"class":115},[91,1743,1744],{"class":93,"line":399},[91,1745,1746],{"class":115},"    console.print(renderable)\n",[91,1748,1749,1751],{"class":93,"line":405},[91,1750,608],{"class":104},[91,1752,1753],{"class":115}," console.file.getvalue()\n",[91,1755,1756],{"class":93,"line":456},[91,1757,123],{"emptyLinePlaceholder":122},[91,1759,1760],{"class":93,"line":471},[91,1761,123],{"emptyLinePlaceholder":122},[91,1763,1764,1766,1769],{"class":93,"line":543},[91,1765,390],{"class":104},[91,1767,1768],{"class":226}," test_render_is_plain_data_to_table",[91,1770,1482],{"class":115},[91,1772,1773,1776,1778],{"class":93,"line":605},[91,1774,1775],{"class":115},"    out ",[91,1777,237],{"class":104},[91,1779,1780],{"class":115}," text_of(render(F2))\n",[91,1782,1783,1786,1789,1792,1795,1798,1801,1803,1805,1807,1810,1812],{"class":93,"line":614},[91,1784,1785],{"class":104},"    assert",[91,1787,1788],{"class":333}," \"eu-west-1\"",[91,1790,1791],{"class":104}," in",[91,1793,1794],{"class":115}," out ",[91,1796,1797],{"class":104},"and",[91,1799,1800],{"class":333}," \"10\u002F10\"",[91,1802,1791],{"class":104},[91,1804,1794],{"class":115},[91,1806,1797],{"class":104},[91,1808,1809],{"class":333}," 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Keep rendering pure, decouple refresh from polling, print through the live console, fall back to one log line per state change when there is no terminal, and inject fetch and sleep so the loop is testable. For watching many things at once, that is usually all the interface a CLI needs.",[25,2032,2034],{"id":2033},"frequently-asked-questions","Frequently asked questions",[1226,2036,2038],{"id":2037},"can-live-combine-a-progress-bar-and-a-table","Can Live combine a progress bar and a table?",[10,2040,2041,2042,2045,2046,2048,2049,2052,2053,2056,2057,2059],{},"Yes. 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