convert a string to a number pandas code example
Example 1: convert column to numeric pandas
# convert all columns of DataFrame
df = df.apply(pd.to_numeric) # convert all columns of DataFrame
# convert just columns "a" and "b"
df[["a", "b"]] = df[["a", "b"]].apply(pd.to_numeric)
Example 2: convert pandas series from str to int
df['DataFrame Column'] = pd.to_numeric(df['DataFrame Column'])