TAB键在python自动完成中不起作用 [英] TAB key not working in python auto-complete

问题描述

我正在尝试使用python中的readline创建一个交互式命令行程序.

I'm trying to create an interactive command line program using readline in python.

run.py文件包含以下代码:

The file run.py contains the following code:

import readline

class SimpleCompleter(object):
    
    def __init__(self, options):
        self.options = sorted(options)
        return

    def complete(self, text, state):
        response = None
        if state == 0:
            # This is the first time for this text, so build a match list.
            if text:
                self.matches = [s for s in self.options if s and s.startswith(text)]
            else:
                self.matches = self.options[:]
                
        try:
            response = self.matches[state]
        except IndexError:
            response = None
        
        return response

def input_loop():
    line = ''
    while line != 'stop':
        line = input('Prompt ("stop" to quit): ')
        print(f'Dispatch {line}')

# Register our completer function
completer = SimpleCompleter(['start', 'stop', 'list', 'print'])
readline.set_completer(completer.complete)

# Use the tab key for completion
readline.parse_and_bind('tab: complete')

# Prompt the user for text
input_loop()

问题是，当我尝试直接从终端运行文件(即 python run.py )时，TAB键不被视为自动完成键，而是被视为4个空格，因此，当我按两次T​​AB键时，我没有任何建议.但是，如果我从python控制台(即 import run.py )导入了文件，则TAB键被视为自动完成键，并且得到了建议.

The problem is when I try to run the file directly from the terminal (i.e. python run.py) the TAB key is not considered as auto-completion key, instead it is considered 4 spaces, so I got no suggestions when I press the TAB key twice; However, if I imported the file from a python console (i.e. import run.py) the TAB key is considered auto-completion key and I got suggestions as expected.

问题似乎出在那

readline.parse_and_bind('tab: complete')

所以我尝试将其放入此处的单独配置文件中，但是问题保持不变.

so I tried to put it in a seperate config file as mentioned here but the problem remained the same.

所以问题是为什么会这样?以及我该如何解决.

So the question is why is this happening? and how can I fix it.

推荐答案

最后找到了答案，问题是我使用的是Mac，所以不是

Finally found the answer, and the problem was that I am using Mac, so instead of

readline.parse_and_bind('tab: complete')

我必须使用

readline.parse_and_bind('bind ^I rl_complete')

现在直接使用 python run.py 运行代码，我得到了预期的建议.

Now running the code directly using python run.py, I get the suggestions as expected.

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