Artificial intelligence in class 9th and 10th | basic data types in Python | techno gyani

Artificial intelligence in class 9th and 10th | basic data types in Python | techno gyani
#datatypes
#datatypesin9thclass
#datatypesin10thclass
#Integers

In Python 3, there is effectively no limit to how long an integer value can be. Of course, it is constrained by the amount of memory your system has, as are all things, but beyond that an integer can be as long as you need it to be: print(123123123123123123123123123123123123123123123123 + 1) 123123123123123123123123123123123123123123123124

Python interprets a sequence of decimal digits without any prefix to be a decimal number:

print(10) 10

The following strings can be prepended to an integer value to indicate a base other than 10:

PrefixInterpretationBase0b (zero + lowercase letter 'b')
0B (zero + uppercase letter 'B')Binary20o (zero + lowercase letter 'o')
0O (zero + uppercase letter 'O')Octal80x (zero + lowercase letter 'x')
0X (zero + uppercase letter 'X')Hexadecimal16



For more information on integer values with non-decimal bases, see the following Wikipedia sites: Binary, Octal, and Hexadecimal.

The underlying type of a Python integer, irrespective of the base used to specify it, is called int:



Note: This is a good time to mention that if you want to display a value while in a REPL session, you don’t need to use the print() function. Just typing the value at the prompt and hitting Enter will display it:



Many of the examples in this tutorial series will use this feature.

Note that this does not work inside a script file. A value appearing on a line by itself in a script file will not do anything.

Floating-Point Numbers

The float type in Python designates a floating-point number. float values are specified with a decimal point. Optionally, the character e or E followed by a positive or negative integer may be appended to specify scientific notation:


Further Reading: For additional information on floating-point representation in Python and the potential pitfalls involved, see Floating Point Arithmetic: Issues and Limitations in the Python documentation.

Complex Numbers

Complex numbers are specified as  2+3j

Strings

Strings are sequences of character data. The string type in Python is called str.

String literals may be delimited using either single or double quotes. All the characters between the opening delimiter and matching closing delimiter are part of the string:


A string in Python can contain as many characters as you wish. The only limit is your machine’s memory resources. A