+ 2
Can someone tell me what split() does in python? I looked at the documentation and it confused me.
3 odpowiedzi
+ 5
a="1:2:34:5"
split_up = a.split(":")
print(split_up )
Output:
['1', '2', '34', '5']
The variable 'a' is split (cut, tokenized, separated) into pieces, using ":" as the place to cut.
The variable 'split_up' is a list of pieces that result from the splitting.
+ 4
"Line separators" vary between Unix/Linux and Windows (important if you wish to split by lines):
https://stackoverflow.com/a/454809
Escaping (with \) depends on whether the string actually contains backslashes.
When processing (from the program's perspective, not the data's):
\n : The backslash applies to "n" and has special meaning (end of line).
\\ : The first backslash applies to the next character, which outputs a non-special \, and escape-processing ends (continuing with 'n').
\\n: The generated \ is NOT SPECIAL and is treated as output. The "n" is not interpreted and the string contains a literal backslash followed by 'n' ('\n').
a="\\n"
--> creates a string "\n" (two characters long)
a="\n"
--> creates a string using the end of line sequence for the host operating system. (1 or 2 characters; see the link).
You may want to split by the end-of-line sequence written by the OS that created the file (which may be different than where you are running Python)...just read the other comments about file reading at the link.
+ 1
so suppose you have a variable with some very long string which is supposed to be in separate lines. do you use split ('\n) or split('\\n)?