What does sep mean in python?

The full name is Separate, which means separated
Used to customize the separator when printing two elements (the default is two spaces)

The keyword parameter sep is the implementation separator, such as multiple When outputting parameters, you want to output the middle delimiting character

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print(1, 2, 3, sep = ',', end = '\r\n')
print(1, 2, 3, sep = ' ', end = '\r\n')

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The result output is as follows:

1,2,3
1 2 3

print("file\n","abc","bcd","fff\n","poi")
print("-------------")
print("file\n","abc","bcd","fff\n","poi",sep='')
print("-------------")
print("file\n","abc","bcd","fff\n","poi",sep=' ')
print("-------------")

The result is:

file
 abc bcd fff
poi-------------file
abcbcdfff
poi-------------file
 abc bcd fff
poi-------------

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