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I found this potentially very useful python script, but came across these expressions which I've never seen before:
inputfilename = r'/path/to/infile'
outputfilename = r'/path/to/outfile'
I can't find a way to search for it. what does the r'...' do?
Thanks for your help!
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An 'r' preceding a string denotes a raw, (almost) un-escaped string. The escape character is backslash, that is why a normal string will not work as a Windows path string.
Just use path = variable . The point of the r'...' notation is for writing raw string literals; it changes the rules for character escaping inside of the quotes.
Use open() to open a file in a different directory Join path with filename into a path to filename from the current directory. Call open(file) with file as the resultant path to filename to open filename from the current directory. Hello, World!
In Python, when you prefix a string with the letter r or R such as r'...' and R'...' , that string becomes a raw string. Unlike a regular string, a raw string treats the backslashes ( \ ) as literal characters.
The r'..' string modifier causes the '..' string to be interpreted literally. That means, r'My\Path\Without\Escaping' will evaluate to 'My\Path\Without\Escaping' - without causing the backslash to escape characters. The prior is equivalent to 'My\\Path\\Without\\Escaping' string, but without the raw modifier.
Note: The string cannot end with an odd number of backslashes, i.e r'Bad\String\Example\' is not a correct string.
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