Multiple statements can be put on one line separated by ;. This can save a lot of whitespace from indentation.

while foo(a): print a;a*=2 

even better: while foo(a):print a;a*=2

Multiple statements can be put on one line separated by ;. This can save a lot of whitespace from indentation.

while foo(a): print a;a*=2 

Or even better:

while foo(a):print a;a*=2 

Multiple statements can be put on one line separated by ;. This can save a lot of whitespace from indentation.

while foo(a): print a;a*=2 

Multiple statements can be put on one line separated by ;. This can save a lot of whitespace from indentation.

while foo(a): print a;a*=2 

even better: while foo(a):print a;a*=2