Changing observation values of a column in a dataframe (wich follows pattern) for names-CodePudding

I'm working with a dataframe that contains several observations of BMW cars. The thing is that in the model columns I got several models like

Model 
320
420
425
335
325
118
Z4
.
.
.

I want to change the number to its series, the ones that start by 1 are serie1, if starts with 2 are serie2. I've already checked str.contains(pat = '1') but I still don't know how to apply it to the whole column.

CodePudding user response：

Pandas has a pandas.Series.str.replace method which can be used for this purpose. You would do something like:

df['Model'].str.replace('^1', 'serie1')

CodePudding user response：

If I understand you correctly, you want to get first character from the model column:

df["Serie"] = "Serie "   df["Model"].str[0]
print(df)

Prints:

  Model    Serie
0   320  Serie 3
1   420  Serie 4
2   425  Serie 4
3   335  Serie 3
4   325  Serie 3
5   118  Serie 1
6    Z4  Serie Z