**# 2 KEYWORD'S OF PYTHON FUNCTION f(x)=y:**

def = define the function given as an X
return = returning as a Y

**# EXAMPLE OF A FUNCTION:**

def convert_state(state):
    for state in data['STATE'].value_counts().index:
        if data['STATE'].value_counts()[state] > 2500:
            return state
        else:
            return "other"

**# EXAMPLE OF A FUNCTION lambda:**

data['MDMAUD'].apply(lambda x: "other" if x != "XXXX" else x)
****