Nested IF Statements in Python - Conditional Statements in Python - Python Tutorial for Beginners

Publicado el: 24 febrero 2021
en el canal de: Digital Academy

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🖥️ Nested IF Statements in Python - Conditional Statements in Python

When you have an IF statement inside another IF statement, this is called nesting, in the programming world. It does not have to always be a simple IF statement, but you could use the concept of IF, IF-ELSE and even IF-ELIF-ELSE statements, all of them combined, to form a more complex structure - and check multiple conditions, in a given code.

Although the indentation of the statements makes the structure apparent, the nested conditionals become difficult to read, very quickly. In general, it is a good idea to avoid them, as much as you can, since indentation is the only way to figure out what is the level of nesting.

An IF statement, present inside another IF statement, which is present inside another IF statements itself - and so on - is pretty difficult to read. Right? But, Let's have a look at one example of nested conditionals:

if expression_1:
statement(s)
else:
if expression_2:
statement(s)
else:
statement(s)

The outer conditional contains two branches. The second branch, ELSE, contains another IF statement - which has two branches of its own. Those two branches could contain conditional statements, as well. You see now, how quickly this could become difficult to read, and even code yourself?!

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