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100 Days Of Python - Day 1

Posted Updated
By Ndimofor Aretas 1 min read

Python - Day 1

Printing

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print("Hello World")

Input

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print("Hello " + input("What is your name? "))

String length

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print(len(input("What is your name? ")))

Variables

To create a variable, you just have to give it a name and set it equal to a value.

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name = "Jack"
print(name)

Variable naming rules

  • Variables names can not start with a number.
  • Variables can not contain spaces, use _ instead.

  • Variables can not contain any of these symbols:

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    `:'",<>/?|\!@#%^&*~-+`
  • It’s considered best practice (PEP8) that names are lowercase with underscores instead of spaces. For example:
  • snake_case instead of MACRO_CASE
  • CapitalizedWords or CamelCase instead of PascalCase
  • Avoid using special symbols like @, $, %, etc.
  • Don’t start a variable name with a digit.

Challenge

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# Write a program that switches the values stored in the variables a and b.

# Warning. Do not change the code below. Your program should work for different inputs. e.g. any value of a and b.

# Example Input
a = input("a: ")
b = input("b: ")

# Example Output
# a: 3
# b: 5

# a: 5
# b: 3

####################################
# Don't change the code below 👇

c = a
a = b
b = c

# Don't change the code above 👆

####################################
#Write your code below this line 👇

print("a: " + a)
print("b: " + b)

Challenge

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# Write a program that generates a band name based on the user's hometown and pet name.

print("Welcome to the Band Name Generator.")
city = input("What's name of the city you grew up in?\n")
pet = input("What's your pet's name?\n")
# Example Output
print("Your band name could be " + city + " " + pet)
Python Tutorial, Day 1
printing to the console in python variable naming rules in python
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