让python执行完停在解释器窗口

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我是在windows里写入的一个执行python脚本的批处理脚本文件（.bat文件），但是程序报错之后窗口会一闪而过，并没有停留下来

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一、windows让批处理文件运行完成后不关闭窗口

1、你在批处理最后加一句 cmd /K （方法一）

更多信息，查看help cmd

E:\workCode>help cmd
启动 Windows 命令解释器的一个新实例

CMD [/A | /U] [/Q] [/D] [/E:ON | /E:OFF] [/F:ON | /F:OFF] [/V:ON | /V:OFF]
    [[/S] [/C | /K] string]

/C      执行字符串指定的命令然后终止
/K      执行字符串指定的命令但保留
/S      修改 /C 或 /K 之后的字符串处理(见下)
/Q      关闭回显
/D      禁止从注册表执行 AutoRun 命令(见下)
/A      使向管道或文件的内部命令输出成为 ANSI
/U      使向管道或文件的内部命令输出成为
        Unicode
/T:fg   设置前台/背景颜色(详细信息见 COLOR /?)
/E:ON   启用命令扩展(见下)
/E:OFF  禁用命令扩展(见下)
/F:ON   启用文件和目录名完成字符(见下)
/F:OFF  禁用文件和目录名完成字符(见下)
/V:ON   使用 ! 作为分隔符启用延迟的环境变量
        扩展。例如，/V:ON 会允许 !var! 在执行时
        扩展变量 var。var 语法会在输入时
        扩展变量，这与在一个 FOR
        循环内不同。
/V:OFF  禁用延迟的环境扩展。

2、BAT文件最后加一行：pause（方法二）
批处理文件就是一个一步一步地执行命令的程序，执行完了当然会关掉，pause只是让他暂停执行而已，按个任意键依然关掉。

但是这两种方式都没看到Python解释器中报出的错误信息，Python解释器还是会一闪而关闭，下面 二 中说明如何让程序出错后让解释器停留。

二、让python执行完停在解释器窗口

1、默认情况下，python执行完成后会直接退出。如果还想查看运行结果或是接着执行其他命令就不行了。遇到这种情况，可以在执行脚本的命令中添加 -i 选项，例如我想执行example.py

python -i example.py

这样，在执行完example.py 后，程序就会停留在python的控制台了。
当然也可以在脚本里加一个输入函数让程序执行停下来，可以根据需要选择。

更多python参数的选择使用参看 python -h：

E:\workCode>python -h
usage: python [option] ... [-c cmd | -m mod | file | -] [arg] ...
Options and arguments (and corresponding environment variables):
-b     : issue warnings about str(bytes_instance), str(bytearray_instance)
         and comparing bytes/bytearray with str. (-bb: issue errors)
-B     : don't write .pyc files on import; also PYTHONDONTWRITEBYTECODE=x
-c cmd : program passed in as string (terminates option list)
-d     : debug output from parser; also PYTHONDEBUG=x
-E     : ignore PYTHON* environment variables (such as PYTHONPATH)
-h     : print this help message and exit (also --help)
-i     : inspect interactively after running script; forces a prompt even
         if stdin does not appear to be a terminal; also PYTHONINSPECT=x
-I     : isolate Python from the user's environment (implies -E and -s)
-m mod : run library module as a script (terminates option list)
-O     : remove assert and __debug__-dependent statements; add .opt-1 before
         .pyc extension; also PYTHONOPTIMIZE=x
-OO    : do -O changes and also discard docstrings; add .opt-2 before
         .pyc extension
-q     : don't print version and copyright messages on interactive startup
-s     : don't add user site directory to sys.path; also PYTHONNOUSERSITE
-S     : don't imply 'import site' on initialization
-u     : force the binary I/O layers of stdout and stderr to be unbuffered;
         stdin is always buffered; text I/O layer will be line-buffered;
         also PYTHONUNBUFFERED=x
-v     : verbose (trace import statements); also PYTHONVERBOSE=x
         can be supplied multiple times to increase verbosity
-V     : print the Python version number and exit (also --version)
         when given twice, print more information about the build
-W arg : warning control; arg is action:message:category:module:lineno
         also PYTHONWARNINGS=arg
-x     : skip first line of source, allowing use of non-Unix forms of #!cmd
-X opt : set implementation-specific option
file   : program read from script file
-      : program read from stdin (default; interactive mode if a tty)
arg ...: arguments passed to program in sys.argv[1:]

Other environment variables:
PYTHONSTARTUP: file executed on interactive startup (no default)
PYTHONPATH   : ';'-separated list of directories prefixed to the
               default module search path.  The result is sys.path.
PYTHONHOME   : alternate <prefix> directory (or <prefix>;<exec_prefix>).
               The default module search path uses <prefix>\python{major}{minor}.
PYTHONCASEOK : ignore case in 'import' statements (Windows).
PYTHONIOENCODING: Encoding[:errors] used for stdin/stdout/stderr.
PYTHONFAULTHANDLER: dump the Python traceback on fatal errors.
PYTHONHASHSEED: if this variable is set to 'random', a random value is used
   to seed the hashes of str, bytes and datetime objects.  It can also be
   set to an integer in the range [0,4294967295] to get hash values with a
   predictable seed.
PYTHONMALLOC: set the Python memory allocators and/or install debug hooks
   on Python memory allocators. Use PYTHONMALLOC=debug to install debug
   hooks.

2、或者用os.system(“pause”)

import os 

.......
os.system("pause")

参考：
1、https://www.zhihu.com/question/35442246

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