[Solved:] How to use pd.append() ?

[deanhystad]

This doesn't work either:

# 1) This works fine:   Oh no it doesn't!
 
df1 = pd.DataFrame([[1, 2], [3, 4]], columns=list('AB'))
df2 = pd.DataFrame([[5, 6], [7, 8]], columns=list('AB'))
df1.append(df2)
print(df1)

Output:
   A  B
0  1  2
1  3  4

In both cases .append() creates a new dataframe instead of modifying the dataframe in place.