Python Quickstart for Experienced Programmers/

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The Python Language 3

The Python Language 3

Explore the main tools for control flow in Python.

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Code blocks

In C-style languages, code blocks are indicated by curly braces {...}. In Python, we instead use a colon to introduce a code block, and all code inside that block must be indented consistently with at least one whitespace character.

Conditional execution

Like most languages, Python uses if / else constructs for conditional branching. Here, we branch using the Python boolean type, which can have values True or False.

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if True:               # valid code block, code indented by 4 spaces
    print('Here')
else:
    pass               # pass statement does nothing
if True:
   print('Here')
  pass                 # error: inconsistent indentation in block

Loops

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