what is the meaning of indentationerror unexpected indent in python code example

Example 1: IndentationError: unexpected indent

# Python uses spacing at the start of the line to determine when code blocks start and end. 
# Errors you can get are:

def a():
...print "foo"
...     print "bar"
IndentationError: unexpected indent

>>>   print "hello"
IndentationError: unexpected indent

Example 2: IndentationError: unexpected indent

#Check if all your code is spaced corectly!