Python relies on indentation (whitespace at the beginning of a line) to define scope in the code. Other programming languages often use curly-brackets for this purpose.
ExampleNotice the indentation inside the if block:
a = 33
b = 200
if b > a:
print("b is greater than a")
If statement, without indentation (will raise an error):
a = 33
b = 200
if b > a:
print("b is greater than a") # you will get an error
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