python pandas.Series.isin with case insensitive -


i want filter out rows 1 of dataframe's column data in list.

df[df['column'].isin(mylist)]

but found it's case sensitive. there method using ".isin()" case insensitive?

one way comparing lower or upper case of series same list

df[df['column'].str.lower().isin([x.lower() x in mylist])]

the advantage here not saving changes original df or list making operation more efficient

consider dummy df:

    color   val 0   green   1 1   green   1 2   red     2 3   red     2 4   blue    3 5   blue    3

for list l:

l = ['green', 'blue']

you can use isin()

df[df['color'].str.lower().isin([x.lower() x in l])]

you get

    color   val 0   green   1 1   green   1 4   blue    3 5   blue    3

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