Filtering string/float/integer values in pandas dataframe columns

You can use the outputs from pd.to_numeric and boolean indexing.

To get only the strings use:

df[pd.to_numeric(df.SIC, errors='coerce').isnull()]

Output:

      SIC
5   shine
6     add
8     Nan
9  string

To get only the numbers use:

df[pd.to_numeric(df.SIC, errors='coerce').notnull()]

Output:

        SIC
1    246804
2    135272
3    898.01
4   3453.33
7       522
10    29.11
11       20

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