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python stderr

print() function in python3 supports a 'file' argument, which specifies where the function should write to given objects to. If not specified, then the print statements has defaulted to sys.stdout.

python3中的print()函数支持一个'file'参数，该参数指定函数应将给定对象写入的位置。 如果未指定，则print语句默认为sys.stdout 。

打印到标准错误 (Printing to stderr)

Using Python2

使用Python2

Example:

例：

import sysprint >> sys.stderr , "Include help for learning"

Output

输出量

Include help for learning

Using Python3

使用Python3

Example:

例：

import sysprint('Include help for learning', file = sys.stderr)

Output

输出量

Include help for learning

翻译自: https://www.includehelp.com/python/how-to-print-to-stderr.aspx

python stderr