Posts

Control structures in Python

-
Control Structures  In Python, control structures are used to control the flow of a program, by executing certain code blocks based on certain conditions. Here are some of the most commonly used control structures in Python:  If-else statements : If-else statements are used to perform different actions based on whether a certain condition is true or false. The syntax of an if-else statement is as follows: if condition:     # code to execute if condition is true else :     # code to execute if condition is false For loops : For loops are used to iterate over a sequence of items, such as a list, tuple, or string. The syntax of a for loop is as follows: for item in sequence: # code to execute for each item in the sequence While loops : While loops are used to repeat a block of code as long as a certain condition is true. The syntax of a while loop is as follows: while condition:      # code to execute while condition is true Break and co...
Post a Comment
Read more

Functions in Python

-
Functions in Python In Python, functions are blocks of code that are designed to perform a specific task. Functions are defined using the def keyword, and can accept parameters and return values. The general syntax of a function definition is as follows: def function_name ( parameter1, parameter2, ... ):     # code to execute     return value Here's an example of a simple function that takes two parameters and returns their sum: def add ( a, b ):     return a + b Functions can be called by using their name followed by parentheses, and passing any required arguments. result = add( 3 , 4 ) # result is 7 Functions can also be used without returning any value, in such cases, the return statement is not needed. def print_hello ():     print ( "Hello, World!" ) print_hello() # it will print "Hello, World!" Functions can also accept a variable number of arguments by using *args or **kwargs . *args is used to pass a variable number ...
Post a Comment
Read more

Python variables

-
 Variables in Python In Python, variables are used to store values and are declared by assigning a value to a name. The value can be of any data type, such as a number, string, list, or object. Here's an example of how to declare a variable in Python: x = 5 # declares a variable x and assigns it the value of 5 name = "John" # declares a variable name and assigns it the value of "John" fruits = [ "apple" , "banana" , "orange" ] # declares a variable fruits and assigns it the value of a list You can also assign a value to a variable after it has been declared: x = 5 x = 10 # x now has the value of 10 Variable names in Python can contain letters, numbers, and underscores, but cannot start with a number. Python is case-sensitive, so x and X are considered to be different variables. It's a good practice to give variables descriptive and meaningful names, so that it will be easy to understand the code later. Also, it's a...
Post a Comment
Read more