What's Indentation and how is it used with Python?

Answer 1

Indented text is placed farther to the right. In Python it it used to mark code blocks. Example:

if x==1:
print(2)
print("hi mom!")
x += 1

The print statements are indented, they form a block. This block is only executed if the condition is true, e.g. of x is one. The operation afterwards is not indented and will be executed whether x is 1 or not.

In many other languages code blocks are marked with curly braces {}.

Answer 2

Just a remark - you pick the indentation step yourself - can be two spaces, can be four or whatever.
The convention is four, though. Don't change that unless you have a good excuse...
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so probably never :)

Answer 3

In python a number of statements are considered to be a single block if they have the same indentation. Similarly it comes under a loop or function if the block is sub-indented to it

Answer 4

practical advise: expert says, dont mix spaces and tabs as intendation, it can cause troubles.