内置函数——print函数

 

flush=True参数不可缺少，因为Python的输出默认以行为单位缓冲，即Python只在换行符后显示可打印的字符。

 

 

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print(*objects, sep=' ', end='\n', file=None, flush=False)

Print objects to the text stream file, separated by sep and followed by end. sep, end, file, and flush, if present, must be given as keyword arguments.

All non-keyword arguments are converted to strings like str() does and written to the stream, separated by sep and followed by end. Both sep and end must be strings; they can also be None, which means to use the default values. If no objects are given, print() will just write end.

The file argument must be an object with a write(string) method; if it is not present or None, sys.stdout will be used. Since printed arguments are converted to text strings, print() cannot be used with binary mode file objects. For these, use file.write(...) instead.

Output buffering is usually determined by file. However, if flush is true, the stream is forcibly flushed.

Changed in version 3.3: Added the flush keyword argument.