我在Python 2和Python 3中使用以下代码暂停代码执行，直到用户按下Enter

import six

if six.PY2:
    raw_input("Press the <Enter> key to continue...")
else:
    input("Press the <Enter> key to continue...")

正如mhawke和steveha的评论所指出的，这个问题的最佳答案是:

Python 3. x:

input('Press <ENTER> to continue')

Python 2. x:

raw_input('Press <ENTER> to continue')

For a long block of text, it is best to use input('Press <ENTER> to continue') (or raw_input('Press <ENTER> to continue') on Python 2.x) to prompt the user, rather than a time delay. Fast readers won't want to wait for a delay, slow readers might want more time on the delay, someone might be interrupted while reading it and want a lot more time, etc. Also, if someone uses the program a lot, he/she may become used to how it works and not need to even read the long text. It's just friendlier to let the user control how long the block of text is displayed for reading.

轶事:曾经有一段时间，程序使用“按[ANY]键继续”。这个失败了，因为人们抱怨他们在键盘上找不到ANY键:)

跨平台的方式;工作无处不在

import os, sys

if sys.platform == 'win32':
    os.system('pause')
else:
    input('Press any key to continue...')

这对我来说似乎很好(或Python 2.X中的raw_input())。或者，如果想要暂停特定的秒数，也可以使用time.sleep()。

import time
print("something")
time.sleep(5.5)    # Pause 5.5 seconds
print("something")

print ("This is how you pause")

input()

我有一个类似的问题，我使用信号:

import signal

def signal_handler(signal_number, frame):
    print "Proceed ..."

signal.signal(signal.SIGINT, signal_handler)
signal.pause()

因此，您为信号SIGINT注册了一个处理程序，并暂停等待任何信号。现在从你的程序外部(例如在bash中)，你可以运行kill -2 <python_pid>，这将向你的python程序发送信号2(即SIGINT)。您的程序将调用已注册的处理程序并继续运行。