prefomring a function on an entire dataframe at once code example

Example 1: pandas apply function to every row

# Get rid of $ and , in the SAL-RATE, then convert it to a float
def money_to_float(money_str):
    return float(money_str.replace("$","").replace(",",""))

df['SAL-RATE'].apply(money_to_float)

Example 2: lambda in pandas

Series.apply(lambda x: x**2) 
#x represent the cell value and x**2 is your function