Debugging Indentation error on Python Parser of ArcGIS Field Calculator?

Question

Would anyone please help me find out why I get an indentation error in line 3

def calc(f1,f2,f3):
remove_list = ['01ST', '02ND', '03RD', '04TH', '05TH', '06TH', '07TH', '08TH', '09TH']
    if f2 in remove_list:
        f2 = f2.replace('0','')
    else:
        f2 = f2
f1 = f1.strip()
f2 = f2.strip()
f3 = f3.strip()     
f1 = str(f1).replace('.0','')
x = f1+' '+f2+' '+f3
return x

THe function is simply supposed to evaluate the if statement then concatenate fields f1, f2 and f3. Do I need to end the if statement somehow?

Answer 1

1. You need to indent the function you're defining.

2. Don't further an indent for an if statement until after the if statement.

   def calc(f1,f2,f3):

       remove_list = ['01ST', '02ND', '03RD', '04TH', '05TH', '06TH', '07TH', '08TH', '09TH']
       if f2 in remove_list:
           f2 = f2.replace('0','')
       else:
           f2 = f2
       ...