list of dataframe append having issue

Question

I am trying to create a list of dataframes.

I print my dataframe normally and it works fine.

    print(df)

however if I create a list to store my df, it does not seem to work coz it prints 'None' from listOfDataframe.

    # Create list of data frame using list
    listOfDataframe = []
    listOfDataframe = listOfDataframe.append(df)
    print(listOfDataframe)

whats happening and How do I fix it?

Instead of `listOfDataframe = listOfDataframe.append(df)` should just be `listOfDataframe.append(df)` — Henry Ecker, Jul 26 '21 at 03:05
Also related [Why does list.append() return None?](https://stackoverflow.com/q/20016802/15497888) — Henry Ecker, Jul 26 '21 at 03:06

score 0 · Answer 1 · answered Jul 26 '21 at 05:34

There is no need to reassign a list after appending something to it. It changes it automatically:

# Create list of data frame using list
listOfDataframe = []
listOfDataframe.append(df)
print(listOfDataframe)

It is returning None simply because the append method returns None.

See Henry Ecker's comments.

1 Answers1