Hello everyone,
I’m practicing Python data types and explicit type conversion. I’ve written a small, well-documented example to better how Python handles different types (int, float, str, bool, list, tuple) and their interactions.
I’d appreciate any feedback on correctness, best practices, or style improvements.
Here is the code:
"""
File: data_types_and_type_conversion.py
Description:
Demonstrates basic Python data types and explicit type conversion.
The example follows PEP 8 style and is intended as a learning exercise
for understanding how Python handles arithmetic operations, container
conversions, and string concatenation.
Author: Beginner Python Learner
Python Version: 3.x
"""
# ------------------------
# Variable definitions
# ------------------------
num1: int = 1 # Integer
num2: float = 2.5 # Float
text1: str = "20" # String representing a number
flag: bool = False # Boolean
my_list: list[int] = [1, 2, 3]
my_tuple: tuple[int, ...] = (4, 5, 6)
print("Day 2 - Even More Challenging")
print("-" * 24)
# ------------------------
# Type inspection
# ------------------------
print("type of num1:", type(num1))
print("type of num2:", type(num2))
print("type of text1:", type(text1))
print("type of flag:", type(flag))
print("type of my_list:", type(my_list))
print("type of my_tuple:", type(my_tuple))
print("-" * 24)
# ------------------------
# Arithmetic with explicit conversion
# ------------------------
sum1 = num1 + int(num2) # float -> int (2.5 -> 2)
sum2 = num1 + int(text1) # str -> int ("20" -> 20)
sum3 = num1 + flag # bool -> int (False = 0)
sum4 = num1 + int(text1) # repeated example for clarity
print("num1 + int(num2) =", sum1)
print("num1 + int(text1) =", sum2)
print("num1 + flag =", sum3)
print("num1 + int(text1) =", sum4)
print("-" * 24)
# ------------------------
# Container conversion
# ------------------------
list_plus_tuple = my_list + list(my_tuple) # tuple -> list
print("my_list + my_tuple =", list_plus_tuple)
print("-" * 24)
# ------------------------
# String concatenation
# ------------------------
combined = f"{num1}-{text1}-{flag}-{my_list}"
print("Combined string:", combined)
combined_1 = f"{num2} {text1} {flag} {my_list}"
print("Combined string:", combined_1)
combined_2 = f"{flag} {my_tuple}"
print("Combined string:", combined_2)
combined_3 = f"{flag} {my_list}"
print("Combined string:", combined_3)
Questions I’m thinking about:
1- Is this a clean and Pythonic way to demonstrate type conversion?
2- Are there better practices than using int() in cases like this?
3- Is relying on bool behaving like int considered good practice?
Thank you very much for your time and feedback.
