[Python] Right way to reverse a pandas DataFrame?

Discussão em 'Python' iniciado por Stack, Setembro 25, 2024.

  1. Stack

    Stack Membro Participativo

    Here is my code:

    import pandas as pd

    data = pd.DataFrame({'Odd':[1,3,5,6,7,9], 'Even':[0,2,4,6,8,10]})

    for i in reversed(data):
    print(data['Odd'], data['Even'])


    When I run this code, i get the following error:

    Traceback (most recent call last):
    File "C:\Python33\lib\site-packages\pandas\core\generic.py", line 665, in _get_item_cache
    return cache[item]
    KeyError: 5

    During handling of the above exception, another exception occurred:

    Traceback (most recent call last):
    File "C:\Users\*****\Documents\******\********\****.py", line 5, in <module>
    for i in reversed(data):
    File "C:\Python33\lib\site-packages\pandas\core\frame.py", line 2003, in __getitem__
    return self._get_item_cache(key)
    File "C:\Python33\lib\site-packages\pandas\core\generic.py", line 667, in _get_item_cache
    values = self._data.get(item)
    File "C:\Python33\lib\site-packages\pandas\core\internals.py", line 1656, in get
    _, block = self._find_block(item)
    File "C:\Python33\lib\site-packages\pandas\core\internals.py", line 1936, in _find_block
    self._check_have(item)
    File "C:\Python33\lib\site-packages\pandas\core\internals.py", line 1943, in _check_have
    raise KeyError('no item named %s' % com.pprint_thing(item))
    KeyError: 'no item named 5'


    Why am I getting this error?
    How can I fix that?
    What is the right way to reverse pandas.DataFrame?


    Continue reading...

Compartilhe esta Página