Why instantiate pandas.IndexSlice before use?
Question:
Everywhere I see pandas.IndexSlice code (including in the docs) it is instantiated before being used, like this:
idx = pd.IndexSlice
df.loc[idx[:, 'A':'B'], :] # Sample use of pandas.IndexSlice
Is there a reason to do that, instead of everywhere using it inline like this:
df.loc[pd.IndexSlice[:, 'A':'B'], :] # Inline use of pandas.IndexSlice
Answers:
idx = pd.IndexSlice
Doesn’t instantiate it. this is creating an alias, probably because idx is much more readable. but these two are equivalent.
Everywhere I see pandas.IndexSlice code (including in the docs) it is instantiated before being used, like this:
idx = pd.IndexSlice
df.loc[idx[:, 'A':'B'], :] # Sample use of pandas.IndexSlice
Is there a reason to do that, instead of everywhere using it inline like this:
df.loc[pd.IndexSlice[:, 'A':'B'], :] # Inline use of pandas.IndexSlice
idx = pd.IndexSlice
Doesn’t instantiate it. this is creating an alias, probably because idx is much more readable. but these two are equivalent.