for loop code block

Question

I was reading the tutorial about python here and was wondering that if the for loop does not have a block like this {}, how would we know which block of code is in the for loop. Are we going to have to read it base on the indentation of the code? Or did I miss something fundamental about python? And while I was trying out some python code in notepad++ when I was in the for loop and create a new line in the middle of my code it for some reason made the line of code and everything above it a block of code while everything else below something different. Again am I missing something? I hope it's not bad programming practice.

Accepted Answer

Python runs everything on indentation. The indentation level is how it knows what goes with what.

For example, this works:

```
for i in range(10):
    print i
```

But this blows up with an `IndentationError`:

```
for i in range(10):
print i
```

From docs:

Leading whitespace (spaces and tabs) at the beginning of a logical line is used to compute the indentation level of the line, which in turn is used to determine the grouping of statements.

for loop code block

Solution

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