Pandas: Getting "TypeError: only integer scalar arrays can be converted to a scalar index" while trying to merge data frames
When renaming columns, use DataFrame.columns = [list]
, not DataFrame.columns = [[list]]
:
df1 = pd.DataFrame({'a': [1, 2]})
df2 = pd.DataFrame({'b': [3, 1]})
df1.columns = ['b']
df1.merge(df2, on='b')
# b
# 0 1
Replaced the code tmp.columns = [['POR','POR_PORT']]
with tmp.rename(columns={'Locode':'POR', 'Port Name':'POR_PORT'}, inplace=True)
and it worked.