Python syntax: detailed explanation of print function
Syntax format:
print(value1,value2,……,sep=' ',end='\n',file=sys.stdout,flush=False)
Optional keyword parameters:
file:类文件对象(stream)；默认为当前的sys.stdout.
sep:在值之间插入的字符串，默认为空格。
end:在最后一个值后附加的字符串，默认为换行符。
flush:是否强制刷新流。
1. Sep: default is a space
print('1','2','3','4',sep=',')
Output result:
1,2,3,4
2, end: the default is newline\n
print('1','2','3',end='结束了')
Output result: (note that there is no space between 3 and'end over')
1 2 3结束了
3、file
The default value of the file parameter sys.stdoutrepresents the system standard output, which is the screen. You can modify the value of this parameter and output it to a specific file.
f = open(r"read.txt","w") #打开文件
print('test',file=f) #输出到文件
f.close() #关闭文件
4、flush
The flush parameter is used to control the output cache. Generally, in order to obtain better performance, keep it as False.