While writing a script it often happens, that you don't want to code some part of the script, e.g. the else part of an if loop. You can “mark” it for later completion with the pass statement.
x = 5
if x == 1:
else:
print(x)
File "pass.py", line 6
else:
^
IndentationError: expected an indented block
Solution with pass:
x = 1
if x == 1:
pass
else:
print(x)