Python in One Shot

Python in One Shot


Why to Use Python?
Python can be used for :
1. Programming (for Placements/online contests/DSA)
2. Development (using a backend framework called Django)
3. Machine Learning / Data Science / Artificial Intelligence

Websites built using Python include Google, Youtube, Instagram, Netflix, Uber &
much more.

What to Install?
1. Python (https://www.python.org/)
2. PyScripter (https://rb.gy/bvnn69 )
3. PyCharm (https://www.jetbrains.com/pycharm/)

Our First Python Program
print("Hello World")

A Key Point to know about Python
 It is a case sensitive language



Variables

Basic Types in Python - numbers(integers, floating), boolean, strings

Example 1 :
name = "shradha"
age = 22
print(name)
print(age)

Example 2 :
name = "shradha"
age = 22

name = "aman"
age = 24
print(name)
print(age)

Example 3 :
first_name = "shradha"
last_name = "khapra"
age = 19
is_adult = True

print(first_name + " " + last_name)
print(age)
print(is_adult)

, > Exercise Solution
first_name = "Tony"
last_name = "Stark"
age = 52
is_genius = True



Taking Input
name = input("What is your name? ")
print("Hello " + name)
print("Welcome to our cool Python class")

> Exercise Solution
superhero = input("What is your superhero name? ")
print(superhero)

Type Conversion
old_age = input("Enter your age : ")
#new_age = old_age + 2
#print(new_age)

new_age = int(old_age) + 2
print(new_age)


#Useful converion functions
# 1. float()
# 2. bool()
# 3. str()
# 4. int()

> Code for Sum of 2 Numbers
first_number = input("Enter 1st number : ")
second_number = input("Enter 2nd number : ")
sum = float(first_number) + float(second_number)

print("the sum is : " + str(sum))



Strings
name = "Tony Stark"
print(name.upper())
print(name)

print(name.lower())
print(name)

print(name.find('y'))
print(name.find('Y'))
print(name.find("Stark"))
print(name.find("stark"))

print(name.replace("Tony Stark", "Ironman"))
print(name)