Keywords in Python

What are keywords?

Keywords in Python are reserved words that cannot be used as ordinary identifiers. They must be spelled exactly as they are written.

List of keywords

The following is a list of keywords for the Python programming language.

and	del	from	not
while	as	elif	global
or	with	assert	else
if	pass	yield	break
except	import	print	class
exec	in	raise	continue
finally	is	return	def
for	lambda	try

This prints the keyword list of Python.

$ python
>>> 
>>> import keyword

>>> print keyword.kwlist

['and', 'as', 'assert', 'break', 'class', 'continue', 'def', 'del', 'elif', 'else',
'except', 'exec', 'finally', 'for', 'from', 'global', 'if', 'import', 'in', 'is',
'lambda', 'not', 'or', 'pass', 'print', 'raise', 'return', 'try', 'while', 'with',
'yield']

• Python generators and the yield keyword
• Python’s null equivalent: None
• Python Programming – Types Of Parameters Or Formal Arguments

Keywords Explained

print
print to console

while
controlling the flow of the program

for
iterate over items of a collection in order that they appear

break
interrupt the (loop) cycle, if needed

continue
used to interrupt the current cycle, without jumping out of the whole cycle.
New cycle will begin.

if
used to determine, which statements are going to be executed.

elif
stands for else if.If the first test evaluates to False, then it continues with the next one

else
is optional. The statement after the else keyword is executed, unless the condition is True

is
tests for object identity

not
negates a boolean value

and
all conditions in a boolean expression must be met

or
at least one condition must be met.