How do I delete rows not starting with 'x' in Pandas or keep rows starting with 'x'

Question

I have been at this all morning and have slowly pieced things together. But for the life of me I can not figure out how to use the .str.startswith() function in Pandas.

Answer 1

I am a bit confused by your question. In any case, if you have a DataFrame df with a column 'c', and you would like to remove the items starting with 1, then the safest way would be to use something like:

df = df[~df['c'].astype(str).str.startswith('1')]