.replace() to replace elements in a Pandas DataFrame

[Bob van der Poel]

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
>


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