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Python for Beginners - Learn Python in 1 Hour
Python Programming Tutorial
In this Python lesson, you'll learn everything you need to start programming in Python
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No
prior knowledge in Python or programming is required as everything will be taught
from scratch
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You can use Python in automation to automate repetitive tasks and save time
and increase productivity
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You can build amazing websites powered by Python
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95
print(price)

Declare and Use Variables in Python
Here's a little exercise for you: imagine we want to write a program for a hospital, so
we're going to check in a patient named John Smith
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Give yourself a task like this and run the output
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We can add a string argument to the function to prompt the user
for input
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Once a value is
entered, the program will print the greeting message with the input value
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Numbers - This includes integers and floating-point numbers
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Booleans - This includes True and False values
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For
example, we have the int() function for converting a value to an integer:
birth_year = "1982"age = 2020 - int(birth_year)print("You
are " + str(age) + " years old
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We also have the float() function for converting a value to a float:
num = "10
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Type Conversion in Python
In programming languages like Python, there are times when you need to convert a
variable from one type to another
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In Python, the index of the first character in a string is 0
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print("Hello World"[1]) # Output: e

The float function is used to convert a string to a float value
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The lower method is used to convert a string to lowercase or to find a character or a
sequence of characters
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lower()) # Output: hello
worldprint(string
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replace('o','a'))
# Output: Hella Warld

The in operator can be used to check if a string contains a character
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"print('language' in string) # Output: True

Arithmetic Operators in Python
Python has various arithmetic operators that we can use, such as addition (+),
subtraction (-), multiplication (*), and division (/)
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x = 5x += 3 # Output: 8

Operator precedence in Python is similar to math, but we can always use parentheses to
change the order of operations
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That's why
the answer is 16
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5

When we print x , we get 11
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x += 3print(x) # Output: 14
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5 as the result
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x = 1000 # Output: 1000

Python programmers use comparison operators to evaluate values in Python programs
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They help to build complex rules and conditions
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Comparison Operators
Python uses comparison operators to evaluate values and build complex rules
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The following are logical
operators in Python:
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And operator: and

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Or operator: or

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Not operator: not

Python can perform complex evaluations by applying multiple logical and comparison
operators to the expressions
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For example, you
can declare a variable called temperature and depending on its value, print different
messages on the terminal
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If
the code is not indented, it will not be executed
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If none of the conditions are true, the code will not be executed
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Anything following the hash
symbol will be ignored by Python
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So, we need to convert a given string
to uppercase
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We can see all the available
functions or methods in a string object by typing dot
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If the given string includes a lowercase "k", we should convert the weight to pounds and
print it on a terminal
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45 to convert it to pounds, and print the weight in pounds
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If the "k" condition is not true, that means the weight was entered in pounds
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45, and
print the weight in kilograms
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While Loops in Python
In Python, we use while loops to repeat a block of code multiple times
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But, writing 1 million lines of code
isn't a good approach
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In every iteration of the loop, the value of "i" is incremented by one
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In this case, we multiply a number by a string
to repeat that string
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It will never terminate, and our program will continue running until it runs out of
memory
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In Python, negative indices can be used to access elements in a list
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To change an object at a specified
index, we use an assignment statement
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This is how lists are used in Python:
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To get items in a list using negative index

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To change an item at a given index

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To access elements from the start index up to the end index but exclude the
end

In Python, objects like your phone, bicycle, or TV remote control have strengths that
allow you to operate them
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Similarly, Python
returns a list with an index that includes the elements at index 0, 1, and 2
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Lists are also objects, so they have various methods for adding
or removing items
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If you want to remove all
items in the list, use the clear() method
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When you want to
iterate over a list and access each item individually, use the built -in len() function
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The implementation using the for loop is the shortest and easiest to
understand
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We can pass a value, such as 5 , and it will return a range object
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Tuples in Python are similar to lists, and we can use for loops with any object that
represents a sequence of objects, including tuples
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g
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However, tuples are immutable, meaning we cannot change them once we create them
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If you're interested in learning more about Python, you can check out my Python course
on codewoodmarch
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THANK YOU



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