.replace() to replace elements in a Pandas DataFrame

Michio Suginoo msuginoo at reversalpoint.com
Wed Aug 5 21:17:35 EDT 2020


That said, what remains mystery is why the original one worked this morning.
Strange!


On Wed, Aug 5, 2020 at 10:15 PM Michio Suginoo <msuginoo at reversalpoint.com>
wrote:

> Hi Bob and MRAB,
> Both of you, very kind.
> Thanks.
> I tried with DataFrame as my original code, but this time, I inserted
> regex=True and it worked.
> Thank you very much!
> Best
>
>
> On Wed, Aug 5, 2020 at 9:50 PM Bob van der Poel <bob at mellowood.ca> wrote:
>
>> I don't think that string.replace() has an option for a dictionary of
>> replacements ... mind you, it might be nice if it did. In the meantime,
>> have you tried looping through the dictionary and changing each possible
>> character?
>>
>>
>> On Wed, Aug 5, 2020 at 5:12 PM Michio Suginoo <msuginoo at reversalpoint.com>
>> wrote:
>>
>>> Hi MRAB,
>>>
>>> Sorry, I simply do not understand the intention of your statement.
>>> If .replace() does not do what I want to do: to replace all ' í ' with
>>> 'i'
>>> in any form .
>>> Could you advise me other means to do it?
>>>
>>> I am still a learner, so I am not knowledgeable. But, I presume, this
>>> sort
>>> of needs--to replace parts of string, not an entire string--should be
>>> common.
>>> So, I would presume, there must be some popular way to do it.
>>> If you know, I would appreciate it if you could advise me.
>>>
>>> Thanks.
>>> Best
>>>
>>>
>>> On Wed, Aug 5, 2020 at 8:38 PM MRAB <python at mrabarnett.plus.com> wrote:
>>>
>>> > On 2020-08-06 00:06, Michio Suginoo wrote:
>>> > > Hi MRAB,
>>> > >
>>> > > Here is an example:
>>> > > In the original dataframe, I have something like, 'Agronomía'. And I
>>> > > try to transform it to 'Agronomia'.
>>> > > In this case, I try to replace í with i: the former with a Spanish
>>> > > accent, the latter without.
>>> > >
>>> > That's what you want it to do, but what does it _actually_ do? Does it
>>> > _actually_ replace characters in a string, or only match and replace
>>> > entire strings?
>>> >
>>> > If you have a dataframe that contains the strings 'Agronomía' and 'í',
>>> > does it leave 'Agronomía' as-is but replace 'í' with 'i'?
>>> >
>>> > On Wed, Aug 5, 2020 at 8:00 PM MRAB <python at mrabarnett.plus.com
>>> > <mailto:python at mrabarnett.plus.com>> wrote:
>>> > >
>>> > >     On 2020-08-05 23:21, Michio Suginoo wrote:
>>> > >     > Hi,
>>> > >     >
>>> > >     > I have trouble with .replace() method in a Pandas DataFrame.
>>> > >     > My code is something like this:
>>> > >     > correction_dic1 = {'á': 'a', 'í': 'i', 'ú': 'u', 'ó': 'o'}
>>> > >     > df = df.replace({'Name' : correction_dic1})
>>> > >     > Basically, what I am trying to do here is to replace bowels
>>> with
>>> > >     Spanish
>>> > >     > accent with a plain set of English alphabet in all the entries
>>> > >     in the
>>> > >     > column called 'Name' in the dataframe, df.
>>> > >     >
>>> > >     > A strange thing is that it worked perfectly in the same Jupyter
>>> > >     notebook
>>> > >     > this morning.
>>> > >     > But all of a sudden, it started not doing the replacement any
>>> more.
>>> > >     >
>>> > >     > Could anyone tell what could be the problem?
>>> > >     >
>>> > >     Does that replace characters in strings, or does it replace one
>>> > >     string
>>> > >     with another, e.g. replace the string 'á' with the string 'a'?
>>> > >
>>> > --
>>> > https://mail.python.org/mailman/listinfo/python-list
>>> >
>>> --
>>> https://mail.python.org/mailman/listinfo/python-list
>>>
>>
>>
>> --
>>
>> **** Listen to my FREE CD at http://www.mellowood.ca/music/cedars ****
>> Bob van der Poel ** Wynndel, British Columbia, CANADA **
>> EMAIL: bob at mellowood.ca
>> WWW:   http://www.mellowood.ca
>>
>


More information about the Python-list mailing list