windows 命令行中的漂亮打印

Question

我正在尝试使用库 Clint 在 windows 命令行中为我的输入语句添加颜色。

from clint.textui import colored, puts,prompt

puts(colored.yellow("Hello!!!\n\n"))
user_number = prompt.query(str(colored.cyan('\nPlease enter something:\n')))

我不明白为什么没有显示青色。附件是来自命令行的视图。谢谢！

Answer 1

这不起作用的原因是 prompt.py 将您的输入转换为原始字符串，因此无法识别您选择的颜色。我认为从他们的角度来看这是一个糟糕的实施。你可以通过运行
来证明我的理论 user_number = prompt.query(str(colored.cyan('\nPlease enter something:\n')),batch=True)
这是一个无限循环，但它会打印你的颜色只是因为它没有在 case.

中转换为原始颜色

Answer 2

这里是来自 clint lib

的文件 prompt.py 中查询函数的定义

def query(prompt, default='', validators=None, batch=False):
    # Set the nonempty validator as default
    if validators is None:
        validators = [RegexValidator(r'.+')]

    # Let's build the prompt
    if prompt[-1] is not ' ':
        prompt += ' '

    if default:
        prompt += '[' + default + '] '

    # If input is not valid keep asking
    while True:
        # If batch option is True then auto reply
        # with default input
        if not batch:
            user_input = raw_input(prompt).strip() or default
        else:
            print(prompt)
            user_input = ''

        # Validate the user input
        try:
            for validator in validators:
                user_input = validator(user_input)
            return user_input
        except Exception as e:
            puts(yellow(e.message))

你可以看到你不能像你想要的那样打印彩色文本，因为它期望一个文字字符串作为参数，我们可以像这样改变查询函数以按预期工作

from clint.textui import colored, puts, prompt, validators as validators_module
from re import match

prompt_colors = {
  "red": colored.red, "green": colored.green, "yellow": colored.yellow, "blue": colored.blue,
  "black": colored.black, "magenta": colored.magenta, "cyan": colored.cyan, "white": colored.white
}

def new_query(prompt, color, default='', validators=None, batch=False):
    # Set the nonempty validator as default
    if validators is None:
        validators = [validators_module.RegexValidator(r'.+')]

    # Let's build the prompt
    if prompt[-1] is not ' ':
        prompt += ' '

    if default:
        prompt += '[' + default + '] '

    # If input is not valid keep asking
    while True:
        # If batch option is True then auto reply
        # with default input
        if not batch:
            # now the output is colored as expected 
            puts(prompt_colors[color](prompt))
            user_input = input().strip() or default
        else:
            print(prompt)
            user_input = ''

        # Validate the user input
        try:
            for validator in validators:
                user_input = validator(user_input)
            return user_input
        except Exception as e:
            puts(yellow(e.message))

# now the query function is customized as per our needs
prompt.query = new_query

puts(colored.yellow("Hello!!!\n\n"))
user_input = prompt.query("Please enter something: ", "cyan")

注：我觉得变化已经很清楚了，不需要解释，但是如果你有什么问题，我很乐意在评论部分回答

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