Python uses reserved and predefined words with specific meanings called keywords. In order to specify the coding syntax, keywords are utilized. The keyword is ineligible for usage as a variable name, function, or identifier. With the exception of True and False, all keywords in Python are written in lower case. Let’s go through each of the 33 keywords in Python 3.7 one by one.

A name used to identify a variable, function, class, module, etc. is an identifier. The identification is made up of underscore and character digits. The identification must begin with a letter or underscore before moving on to a number. A-Z or a-z, an underscore (_), and a number make up the letters (0-9). Special characters (#, @, $,%, and!) shouldn’t be used in identifiers.

TOTAL PYTHON KEYWORDS

The reserved words in Python are called keywords.

The name of a variable, function or any other identifier cannot contain a keyword. They are used to specify the Python language’s grammar and organization.

Keywords in Python are case-sensitive.

In Python 3.7, 33 keywords are available. Over time, this value may change somewhat.

All of the keywords, with the exception of True, False, and None, are lowercase and must be spelled that way. The whole list of keywords is shown below.

and	This is a logical operator it returns true if both the operands are true else returns false.
Or	This is also a logical operator it returns true if anyone’s operand is true else returns false.
not	This is again a logical operator it returns True if the operand is false else returns false.
if	This is used to make a conditional statement.
elif	Elif is a condition statement used with an if statement the elif statement is executed if the previous conditions were not true
else	Else is used with if and elif conditional statement the else block is executed if the given condition is not true.
for	This is created for a loop.
while	This keyword is used to create a while loop.
break	This is used to terminate the loop.
as	This is used to create an alternative.
def	It helps us to define functions.
lambda	It is used to define the anonymous function.
pass	This is a null statement which means it will do nothing.
return	It will return a value and exit the function.
True	This is a boolean value.
False	This is also a boolean value.
try	It makes a try-except statement.
with	The with keyword is used to simplify exception handling.
assert	This function is used for debugging purposes. Usually used to check the correctness of code
class	It helps us to define a class.
continue	It continues to the next iteration of a loop
del	It deletes a reference to an object.
except	Used with exceptions, what to do when an exception occurs
finally	Finally is used with exceptions, a block of code that will be executed no matter if there is an exception or not.
from	The form is used to import specific parts of any module.
global	This declares a global variable.
import	This is used to import a module.
in	It’s used to check if a value is present in a list, tuple, etc, or not.
is	This is used to check if the two variables are equal or not.
None	This is a special constant used to denote a null value or avoid. It’s important to remember, that 0, any empty container(e.g empty list) does not compute to None
nonlocal	It’s declared a non-local variable.
raise	This raises an exception
yield	It ends a function and returns a generator.

PYTHON IDENTIFIERS

A name provided to an entity, such as a class, function, variable, etc., is called an identifier. It aids in separating one thing from another.

Guidelines for identifying words

Identifiers can consist of a mix of lowercase (a to z) or capital (A to Z) characters, numerals (0 to 9), or an underscore ( ). Examples of acceptable names are myClass, var 1, and print this to the screen.

An identification number cannot begin with a digit. Although variable1 is an acceptable name, a variable is not.

Identifying terms cannot be used as keywords.

global = 1

OUTPUT

  File "<interactive input>", line 1
    global = 1
           ^
SyntaxError: invalid syntax

We are unable to use special symbols like! @, #, $,%, etc. in our identifier.

a@ = 0

OUTPUT

  File "<interactive input>", line 1
    a@ = 0
     ^
SyntaxError: invalid syntax

Things to Keep in Mind

A case-sensitive language is Python. This implies that variable and variable are distinct terms.

Give the IDs sensible names at all times. While c = 10 is a legitimate name, stating count = 10 would make more sense and make it simpler to understand what it stands for when you next review your code.

An underscore can be used to separate words, as this is a long variable.