# Traffic Light Simulator
# Input a color (red, yellow, green) and print the corresponding action:
# Red → Stop
# Yellow → Get Ready
# Green → Go
light_type=input("Please enter the light type (red, yellow, green ) : ")
if(light_type=="red"):
print("Stop")
elif(light_type=="yellow"):
print("Get Ready")
elif(light_type=="green"):
print("Go")
else:
print("wrong input")
# Login System
# Ask for a username and password.
# If both match predefined values, print "Login successful", else show appropriate error messages.
#username : abc
#password : 123
user=input("Please enter username: ")
password= input("Please enter the password: ")
if(user=="abc" and password == "123"):
print("Login successful")
elif(user != "abc" and password != "123"):
print("both Incorrect Username and Password ")
elif (user != "abc"):
print("Username is not correct ")
else:
print("password is incorrect ")
# Vowel or Consonant
# Input a single alphabet and check whether it is a vowel or consonant.
letter=input("Please enter the letter: ")
if (letter == "a" or letter == "e" or letter == "i" or letter == "o" or letter == "u"):
print(f"{letter} is vowel ")
else:
print(f"{letter} is consonant" )
# Simple Calculator
# Ask the user to input two numbers and an operator (+, -, *, /) and perform the corresponding operation.
num1=float(input("Please enter the first number : "))
operator= input("Please enter (+,-,/,* ) : ")
num2=float(input("Please enter the second number :"))
if (operator=="+"):
result=num1+num2
print(f"{num1} + {num2} = {result}")
elif (operator=="-"):
result=num1-num2
print(f"{num1} - {num2} = {result}")
elif (operator=="/"):
result=num1/num2
print(f"{num1} / {num2} = {result}")
elif (operator=="*"):
result=num1*num2
print(f"{num1} * {num2} = {result}")
else:
print("function not exsites as of now ")
# Number Comparison
# Input three numbers and print the largest one.
# Logic Recap:
# First, check if num1 is greater than or equal to both num2 and num3.
# If not, check if num2 is greater than or equal to both num1 and num3.
# If neither is true, then num3 must be the largest.
num1=int(input("Please enter the first number: "))
num2=int(input("Please enter the second number: "))
num3=int(input("Please enter the third number: "))
if(num1 >= num2 and num1 >=num3):
print(f"{num1} is the largest")
elif(num2>=num1 and num2 >=num3):
print(f"{num2} is largest ")
else:
print(f"{num3} is largest ")
# Leap Year Rules Recap:
# A year is a leap year if:
# It is divisible by 4 and not divisible by 100
# OR
# It is divisible by 400
# For example:
# 2000 → Leap year ✅ (divisible by 400)
# 1900 → Not a leap year ❌ (divisible by 100 but not 400)
# 2024 → Leap year ✅ (divisible by 4 and not 100)
#take input from user
year = int(input("Please enter the year: "))
if (year % 4 ==0 and year % 100 !=0) or (year % 400 == 0):
print(f"{year} is a leap year")
else:
print(f"{year} is not a leap year")
# Grade Calculator
# Input a percentage and print the grade:
# A (90–100)
# B (80–89)
# C (70–79)
# D (60–69)
# F (below 60)
percent=int(input("Please enter the percent: "))
if (percent>=90 and percent<=100):
print(f"{percent} , Your Grade is A")
elif(percent>=80 and percent<=89):
print(f"{percent} , Your Grade is B")
elif(percent>=70 and percent<=79):
print(f"{percent} , Your Grade is C")
elif(percent>=60 and percent<=69):
print(f"{percent} , Your Grade is D")
elif ( percent >0 and percent<60):
print(f"{percent} , Your Grade is F")
else:
print("Invalid Number")
