我刚刚开始学习Python。当我在Windows上执行一个python脚本文件时,输出窗口出现但立即消失。我需要它停留在那里,这样我就可以分析我的输出。我怎么才能让它一直开着?


当前回答

最简单的方法:

import time

#Your code here
time.sleep(60)
#end of code (and console shut down)

这将使代码保持1分钟,然后关闭它。

其他回答

你可以使用-i选项启动python,或者设置环境变量PYTHONINSPECT=x。从文档中可以看出:

运行脚本后进行交互检查;强制执行提示符甚至 如果stdin看起来不是终结符;还PYTHONINSPECT = x

所以当你的脚本崩溃或完成时,你会得到一个python提示符,你的窗口不会关闭。

你有几个选择:

Run the program from an already-open terminal. Open a command prompt and type: python myscript.py For that to work you need the python executable in your path. Just check on how to edit environment variables on Windows, and add C:\PYTHON26 (or whatever directory you installed python to). When the program ends, it'll drop you back to the cmd prompt instead of closing the window. Add code to wait at the end of your script. For Python2, adding ... raw_input() ... at the end of the script makes it wait for the Enter key. That method is annoying because you have to modify the script, and have to remember removing it when you're done. Specially annoying when testing other people's scripts. For Python3, use input(). Use an editor that pauses for you. Some editors prepared for python will automatically pause for you after execution. Other editors allow you to configure the command line it uses to run your program. I find it particularly useful to configure it as "python -i myscript.py" when running. That drops you to a python shell after the end of the program, with the program environment loaded, so you may further play with the variables and call functions and methods.

从已经打开的cmd窗口或启动脚本 在Python 2中,在脚本的末尾添加如下内容:

 raw_input("Press enter to exit;")

或者,在Python 3中:

input("Press enter to exit;")

在出现异常时保持窗口打开(打印异常时)

Python 2

if __name__ == '__main__':
    try:
        ## your code, typically one function call
    except Exception:
        import sys
        print sys.exc_info()[0]
        import traceback
        print traceback.format_exc()
        print "Press Enter to continue ..." 
        raw_input() 

在任何情况下保持窗户开着:

if __name__ == '__main__':
    try:
        ## your code, typically one function call
    except Exception:
        import sys
        print sys.exc_info()[0]
        import traceback
        print traceback.format_exc()
    finally:
        print "Press Enter to continue ..." 
        raw_input()

Python 3

对于Python3,你必须使用input()来代替raw_input(),当然还要调整print语句。

if __name__ == '__main__':
    try:
        ## your code, typically one function call
    except BaseException:
        import sys
        print(sys.exc_info()[0])
        import traceback
        print(traceback.format_exc())
        print("Press Enter to continue ...")
        input() 

在任何情况下保持窗户开着:

if __name__ == '__main__':
    try:
        ## your code, typically one function call
except BaseException:
    import sys
    print(sys.exc_info()[0])
    import traceback
    print(traceback.format_exc())
finally:
    print("Press Enter to continue ...")
    input()

创建一个像dontClose()这样的函数或带有while循环的函数:

import time

def dontClose():
    n = 1
    while n > 0:
        n += 1
        time.sleep(n)
        

然后在代码之后运行函数。例如:

print("Hello, World!")
dontClose()