Remove rows where column value type is string Pandas

Question

I have a pandas dataframe. One of my columns should only be floats. When I try to convert that column to floats, I\'m alerted that there are strings in there. I\'d like to d

Answer 1

One of my columns should only be floats. I'd like to delete all rows where values in this column are strings

You can convert your series to numeric via pd.to_numeric and then use pd.Series.notnull. Conversion to float is required as a separate step to avoid your series reverting to object dtype.

# Data from @EdChum

df = pd.DataFrame({'a': [0.1, 0.5, 'jasdh', 9.0]})

res = df[pd.to_numeric(df['a'], errors='coerce').notnull()]
res['a'] = res['a'].astype(float)

print(res)

     a
0  0.1
1  0.5
3  9.0