View source for Flow Control: if, elif, else


== The goal ==
If I would have…

Questions to [mailto:davrot@uni-bremen.de David Rotermund]

'''Logic blocks need to be indented. Preferable with 4 spaces!'''

== [https://docs.python.org/3/reference/compound_stmts.html#the-if-statement The if statement] ==
<syntaxhighlight lang="python">if i == 1:
    print("if")
elif i == 2:
    print("elif brach A")
elif i == 3:
    print("elif brach B")
else:
    print("else -- default")</syntaxhighlight>

== The full statement ==
<syntaxhighlight lang="python">if_stmt ::=  "if" assignment_expression ":" suite
             ("elif" assignment_expression ":" suite)*
             ["else" ":" suite]</syntaxhighlight>

== if, elif, else with lists ==
<syntaxhighlight lang="python">A = 1
if A in [0, 2, 4, 6, 8]:
    print("found")
else:
    print("NOT found")</syntaxhighlight>Output<syntaxhighlight lang="python">NOT found</syntaxhighlight><syntaxhighlight lang="python">A = 2
if A in [0, 2, 4, 6, 8]:
    print("found")
else:
    print("NOT found")</syntaxhighlight>Output<syntaxhighlight lang="python">found</syntaxhighlight>