Suelmann: 1 Version importiert

2021-12-20T12:27:45Z

1 Version importiert

← Nächstältere Version	Version vom 20. Dezember 2021, 14:27 Uhr
(kein Unterschied)

Suelmann am 1. Januar 1970 um 00:00 Uhr

1970-01-01T00:00:00Z

Neue Seite

__NOTOC__
= Python: if statements, several ways =

For this example, we will consider adult people over 18, otherwise, are children.

1) Basic way

Option A

<pre><nowiki>
if age >= 18:
typeOfPerson = "adult"
else:
typeOfPerson = "child"
</nowiki></pre>

We can assign a default value and change it only if a condition is met.

Option B

<pre><nowiki>
typeOfPerson = "child" #default value
if age >= 18:
typeOfPerson = "adult"
</nowiki></pre>

Option A is better than option B for code optimization, assuming that the probability of either is not very far (Thanks to Arturo Moysen for this comment).

2) Inline if (result = x if condition else y)

<pre><nowiki>
typeOfPerson = "adult" if age >= 18 else "child"
</nowiki></pre>

3) Inline if (result = condition and x or y)

<pre><nowiki>
typeOfPerson = age >= 18 and "adult" or "child"
</nowiki></pre>

4) Inline with tuple, (on_false, on_true)[condition]

<pre><nowiki>
typeOfPerson = ("child", "adult")[age >= 18]
</nowiki></pre>

Condition can be anything that evaluates to a Boolean. It is then treated as an integer since it is used to index the tuple: False == 0, True == 1, which then selects the right item from the tuple.

----
[[KategorieWissen]]

Python/If - Versionsgeschichte

Suelmann: 1 Version importiert

Suelmann am 1. Januar 1970 um 00:00 Uhr