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TOKENS AND DATA CHAPTER
TYPES IN PYTHON 10 PYTHON CHARACTER SET
A set of valid characters recognised by a language is called a character set. The characters used
in the Python source program belong to the Unicode standard. The characters in Python are
grouped into the following categories:
Alphabet: A to Z(uppercase), a to z (lowercase)
Digits: 0 to 9
Special characters (:) colon space ( ) + _- * / /\ ^ & % # $ {} []! _(underscore) >< ?@ , ; : etc.
(white space, blank space, horizontal tab ( ), carriage return, New line, form feed)
Welcome again, young girl. In Python can process any of the ASCII and Unicode characters as data or as literals.
today’s session, you will learn Topics Covered 95%
about various data types used in Python Character Set
Python. Python Tokens PYTHON TOKENS
Data Types A token is the smallest element of a Python program that is meaningful to the interpreter. You
Find Data Type
Errors in Python Programs have learned about some tokens in the previous class. Now learn more about them in detail.
Some More Programs
Thank you, Techie. Will I be PYTHON TOKENS
able to develop programs after
that?
IDENTIFIERS KEYWORDS CONSTANTS OPERATORS PUNCTUATORS
Yes, you will be able to create simple programs but you need regular practice
and more knowledge to be able to do more than that. IDENTIFIERS
An identifier is a sequence of characters taken from a Python character set. It refers to variables,
functions and arrays. The rules for identifiers are:
Only alphabet, digits and underscores are permitted.
Techie, can you tell me what we can do using Python?
Must start with a letter between A to Z or between a to z or an underscore (_).
Uppercase and lowercase are distinct because Python is a case-sensitive language.
Special characters are not allowed.
Python is a multi-purpose programming language. We can use it for a variety of
tasks. We can learn Python for machine learning and AI. In fact, Python is the best Some examples of valid identifiers are Myvar, myvar_1, Sum_of_the_numbers, PASS and _Sum.
language for machine learning and data science projects. Python is also popular for Some examples of invalid identifiers are Global, Var^2, Var 1 and 1var.
website development. Let us take the next step in learning the Python programming
language. KEYWORDS
Keywords are reserved words. They are predefined words. Keywords cannot be used as identifier
names.
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