code how pandas save csv file
df.to_csv('out.csv')update csv file in python using pandas
I was able to get the desired data frame.
import pandas as pd
import numpy as np
df1 = pd.read_csv('\\dir\\test1.csv', index_col=0)
df2 = pd.read_csv('\\dir\\test2.csv', index_col=0)
new_index = list(set(list(df1.index.values)+list(df2.index.values)))
df2 = df2.reindex(new_index)
df2 = df2.join(df1, rsuffix='_P')
df2 = df2.loc[:,~df2.columns.str.endswith('_P')].fillna(df1).fillna(0)
df2.sort_index(inplace=True)
print df2.to_string()
col2 col3 col4 col1
test1 8 7 15 11
test3 5 9 10 9
test5 9 -1 0 12
test7 1 4 9 0
test9 11 10 12 0Copyright © 2021 Codeinu
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