What Does The Error 'indentationerror: Expected An Indented Block In Python' Mean?

Consider following short Python program: i= 21; j= 23; print (i); if i>j : print ('greater') else : print 'lesser' It is giving the error IndentationError: expected an indente

Solution 1:

You need to indent statements that are intended to be in if-else blocks:

i = 21
j = 23
print (i)

if i > j:
    print('greater')
else:
    print('lesser')

Solution 2:

Any time you have a colon, you follow it with an indented block of text. Everything in that block applies to the thing with the colon (which could be a function that you're defining, an if-statement, for-loop, etc). Indents should be 4 spaces (tabs also work).

Also, you don't need semicolons at the end of each line.

Example:

def function(parameter):
    block line 1
    block line 2printfunction(argument)