Python使用Rich库打造更美观的命令行应用的实战指南

from rich import print
print("[bold red]警报![/] 服务器CPU使用率 [underline green]90%[/] :fire:")

from rich.table import Table
table = Table("学生成绩单")
table.add_column("姓名", style="cyan")
table.add_column("数学", justify="right")
table.add_row("张三", "90")
table.add_row("李四", "[red]55[/]")  # 不及格自动标红

from rich.progress import Progress
with Progress() as progress:
    task1 = progress.add_task("[red]下载中...", total=100)
    task2 = progress.add_task("[green]处理中...", total=50)
    while not progress.finished:
        progress.update(task1, advance=0.9)
        progress.update(task2, advance=0.5)

from rich import print
print("基础样式:", 
      "[bold]加粗[/]", 
      "[italic]斜体[/]", 
      "[on black white]反色[/]",
      "[blink]闪烁[/]")  # 支持嵌套：[bold red]红色加粗[/]

print("[#FF5733 on #33FF57]赛博朋克风[/]")

from rich.console import Console
from rich.table import Table
 
console = Console()
table = Table(title="Python生态核心库", show_lines=True)
table.add_column("库名", style="bright_cyan")
table.add_column("版本", justify="center")
table.add_column("功能描述", max_width=40)
 
table.add_row("Rich", "13.8.0", "终端富文本渲染引擎")
table.add_row("Pandas", "2.2.0", "数据分析工具库，支持结构化数据处理")
table.add_row("Requests", "2.31.0", "HTTP请求库，简化API调用")
 
console.print(table)

from rich.progress import track
import time
 
for i in track(range(100), description="处理中..."):
    time.sleep(0.05)

from rich.progress import Progress
 
with Progress() as progress:
    download = progress.add_task("[red]下载文件...", total=1024)
    extract = progress.add_task("[green]解压数据...", total=100)
    
    while not progress.finished:
        progress.update(download, advance=1)
        progress.update(extract, advance=0.5)
        time.sleep(0.01)

from rich.syntax import Syntax
 
code = '''def hello(name):
    """多行文档字符串"""
    print(f"Hello {name}!")'''
 
syntax = Syntax(code, "python", theme="monokai", line_numbers=True)
print(syntax)

from rich.tree import Tree
from rich import print
 
tree = Tree("项目结构")
src_tree = tree.add("src/")
src_tree.add("main.py")
src_tree.add("utils/")
docs_tree = tree.add("docs/")
docs_tree.add("README.md")
 
print(tree)

import logging
logging.warning("磁盘空间不足")

from rich.logging import RichHandler
import logging
 
logging.basicConfig(
    level="INFO",
    format="%(message)s",
    handlers=[RichHandler(
        markup=True,
        log_time_format="[%X]",
        show_time=True
    )]
)
 
logging.info("[bold green]系统启动成功[/]")
logging.error("[bold red]数据库连接失败[/]", extra={"markup": True})

from rich.console import Console
from rich.table import Table
 
console = Console(record=True)  # 启用输出记录
table = Table(...)  # 构建大型表格
 
# 分页输出
for i in range(0, len(table.rows), 20):
    console.print(table.slice(i, i+20))
    input("按回车继续...")

import os
from rich.console import Console
 
# 强制启用ANSI转义序列
os.system("")  # Windows专用激活命令
console = Console(force_terminal=True)  # 强制终端模式

{
    "success": "bold green",
    "warning": "bold yellow",
    "danger": "bold red on white",
    "code": "bright_black on default #FF5733"
}

console.print("[success]操作成功[/]", style="success")

from rich.console import Console
from rich.panel import Panel
from rich.progress import Progress
import time
 
console = Console()
 
while True:
    # 动态数据获取（模拟）
    cpu = 35 + (hash(time.time()) % 65)
    mem = 78 + (hash(time.time()) % 22)
    
    # 构建监控面板
    status_panel = Panel(
        f"[bold]系统状态[/]\n"
        f"CPU: [green]{cpu:.1f}%[/]\n"
        f"内存: [yellow]{mem:.1f}%[/]",
        title="实时监控",
        border_style="bright_blue"
    )
    
    # 构建进度条
    with Progress() as progress:
        cpu_task = progress.add_task("[red]CPU使用[/]", total=100)
        mem_task = progress.add_task("[blue]内存使用[/]", total=100)
        
        progress.update(cpu_task, completed=cpu)
        progress.update(mem_task, completed=mem)
        
        # 组合输出
        console.print(status_panel)
        console.print(progress)
    
    time.sleep(1)

from rich.console import Console
from rich.table import Table
from rich.markdown import Markdown
 
def generate_report(test_results):
    console = Console()
    
    # 测试概览
    overview = f"""
    # 测试报告
    - 总测试数: {len(test_results)}
    - 通过率: {sum(1 for r in test_results if r['passed'])/len(test_results):.1%}
    - 执行时间: {test_results[-1]['time'] - test_results[0]['time']:.2f}s
    """
    console.print(Markdown(overview))
    
    # 详细结果表格
    table = Table(title="测试详情")
    table.add_column("测试用例", style="cyan")
    table.add_column("状态", style="bold")
    table.add_column("耗时(ms)", justify="right")
    
    for result in test_results:
        status = "[green]通过[/]" if result['passed'] else "[red]失败[/]"
        table.add_row(
            result['name'],
            status,
            str(result['duration'])
        )
    
    console.print(table)

import os
os.system("")  # 激活Windows ANSI支持
console = Console(force_terminal=True)

table.add_column("描述", max_width=30, overflow="fold")  # 自动折叠超长文本

with Progress(
    transient=True,  # 动态更新模式
    refresh_per_second=10  # 控制刷新频率
) as progress:
    # 任务定义...