windows命令行中的漂亮打印

Question

我正在尝试使用库Clint向windows命令行中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')))

我不明白为什么青色没有出现。附件是命令行中的视图。谢谢

Answer 1

以下是clint lib中prompt.py文件中查询函数的定义

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))

您可以看到，您无法打印出您试图实现的彩色文本，因为它需要 一个文本字符串作为参数，我们可以改变查询函数，使其按预期工作，如下所示

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")

注意：我认为这些变化足够清楚，不需要解释，但如果您有一些问题，我很乐意在评论部分回答

Answer 2

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。我认为这是一个糟糕的执行。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，但它打印您的颜色只是因为它没有在这个case中转换为原始颜色