Python Bootcamp : 100 Days of code - Day 1

Revisions Day 1

1. print() Function

The print() function prints the specified message to the screen, or other standard output device. Message can be a string, or any other object. Object will be converted to string before written to the screen:

print("Hello World!")

2. input() Function

   Asks the user for input. You can have multiple inputs. Python will stop executing at each of them, waiting for user input.

username = input("What is your name?")
print(f"Hello {username}")

3. Variables

   Variables are containers for storing data values. Rules for Python variable names:

   - A variable name must start with a letter or the underscore character

   - A variable name cannot start with a number

   - A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9, and _)

   - Variable names are case-sensitive (age, Age, and AGE are three different variables)

   - A variable name cannot be any of the Python keywords

   
   

4. String Concatenation

   To concatenate/combine two strings together, a + operator is used:

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

Fig1.1 Challenge image

Band Name Generator

The challenge for Day1 is to create a band name derived from the user input of the city where he/she grew up in and the name of their pet. The script will then combine the 2 together and suggest a name for the band. Tasks are:

1. Create a greeting for the program

2. Ask the user for the city that they grew up in and store it in a variable

3. Ask the user for the name of the pet and store it in a variable

4. Combine the name of their city and pet and show them their band name

5. Make sure the input cursor shows on a new line

Here are the 2 Python scripts where:

1. the first one is a basic using the print() function, variables and string manipulations to achieve what was intended:

#! /usr/bin/env python3

"""
Creates a band name by combining the user's hometown with their pet's name.
"""

print("Welcome to the Band Name Generator!")
hometown = input("What's the name of the city you grew up in?\n")
pet_name = input("What's the name of your pet?\n")
band_name = f"{hometown} {pet_name} Band"
print(f"Your band name could be: {band_name}")

When done, run the chmod command for the script to be executable and then run the script:

# Make script executable
chmod +x band_name.py

# Run the script
./band_name.py

You should get something similar to this:

Fig1.2 Output when running the first script

2. Using functions, I also created a script to achieve the same output:

#! /usr/bin/env python3

"""
Creates a band name by combining the user's hometown with their pet's name.
"""
def bname_generator():
    hometown = input("What's the name of the city you grew up in?\n")
    pet_name = input("What's the name of your pet?\n")
    return f"{hometown} {pet_name} Band"

def main():
    print("Welcome to the Band Name Generator!")
    band_name = bname_generator()
    print(f"Your band name could be: {band_name}")

if __name__ == "__main__":
    main()

As per above, once done run the chmod command and the script to test if it works:

# Make script executable
chmod +x band_name2.py

# Run the script
./band_name2.py

Output was similar to the first one:

Fig1.3 Output from running the second script

Summary

Day 1 done and 99 more to go. Today was all about confirmations on print(), variables, input(), len(), string manipulations and concatenations. Stay tuned as will be blogging about them as I cover each day's challenges. Hopefully it can help you as well on your Pythonic learning journey!!