How to add prefix to only certain columns in python Question: I have a dataframe with 5 columns, say ‘A’, ‘B’, ‘C’, ‘D’, and ‘E’. I only want to add a prefix to columns ‘D’ and E. I have tried the following, but got an error message saying "Index does not support mutable operations". df.columns[-2:] …
Find the common path prefix of a list of paths Question: My problem is to find the common path prefix of a given set of files. Literally I was expecting that “os.path.commonprefix” would do just that. Unfortunately, the fact that commonprefix is located in path is rather misleading, since it actually will search for string …
What is the underscore prefix for python file name? Question: In cherryPy for example, there are files like: __init__.py _cptools.py How are they different? What does this mean? Asked By: DNB5brims || Source Answers: __…__ means reserved Python name (both in filenames and in other names). You shouldn’t invent your own names using the double-underscore …
How to remove a path prefix in python? Question: I wanted to know what is the pythonic function for this : I want to remove everything before the wa path. p = path.split(‘/’) counter = 0 while True: if p[counter] == ‘wa’: break counter += 1 path = ‘/’+’/’.join(p[counter:]) For instance, I want ‘/book/html/wa/foo/bar/’ to …
Determine the common prefix of multiple strings Question: I have a set of strings, e.g. my_prefix_what_ever my_prefix_what_so_ever my_prefix_doesnt_matter I simply want to find the longest common portion of these strings, here the prefix. In the above the result should be my_prefix_ The strings my_prefix_what_ever my_prefix_what_so_ever my_doesnt_matter should result in the prefix my_ Is there a …
