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KEYWORDS
Keywords are the reserved words. They are predefined words. Keywords cannot be used as an
identifier.
Some commonly used keywords in Python are given below:
False del for in or while None break elif
from is with True else global and continue if
return as def finally import not
CONSTANTS OR LITERALS
Constants are fixed values that do not change during the execution of a program. Literals are the
type of constant. Literals refer to any number, text and other information that represents a value.
Python supports the following literals:
Literals Example
String literals “hello”, ‘12345’
Integer literals 0, 1, 2, -1, -2
Long literals 89675L
Floating-point literals 3.14
Complex literals 12j
Boolean literals True or False
Special literals None
Unicode literals u“hello”
List literals [5,6,7]
Tick ( ) if you know this.
▶ Identifiers refers to the name of a variable, function, array, etc.
▶ A token is the smallest element of a Python program that is meaningful to the interpreter.
OPERATORS
Operators are special symbols that are used to perform some specific operations on operands and
give a meaningful result. Operands are the variables or constants involved in the mathematical
or logical operations.
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