reset_index pandas
df.reset_index(drop=True, inplace=True)reset_index pandas
df.reset_index(drop=True, inplace=True)how to set index pandas
# assignment copy
df = df.set_index('month')
# or inplace
df.set_index('month', inplace=True)
# year sale month month year sale
# 0 2012 55 1 1 2012 55
# 1 2014 40 4 => 4 2014 40
# 2 2013 84 7 7 2013 84
# 3 2014 31 10 10 2014 31pandas df make set index column
df.reset_index(inplace=True)
df = df.rename(columns = {'index':'new column name'})how to change index in dataframe python
index = [1,2]
df.index = indexstr replace pandas
>>> pd.Series(['foo', 'fuz', np.nan]).str.replace('f.', 'ba', regex=True)
0 bao
1 baz
2 NaN
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