Convert integer to string in Python

Strings, Integers, and why Conversion?

In programming, data types are fundamental as each is designed to manage specific kinds of data.

• String data constitutes textual content (like sentences, single characters, or symbols).
• Integer data, on the other hand, represents whole numbers.

So why convert integers to strings? Some common scenarios include:

• String formatting/interpolation: Your buddy integer becomes one of the cool string kids and can strut its stuff with other strings in a sentence.
• File I/O: When writing data to a text file, it's best if all residents in the text file speak the same language ― string, that is!
• Web transfer: In backend development, when numerical data needs to journey over a network, packing it up as a string can make the trip smoother.

Adding Personality: Customizing Conversion

When you've got your custom objects and you want a tailored string conversion method, adding a __str__() method to your class will give you direction over the conversion.

class Product:
    def __init__(self, name, price):
        self.name = name
        self.price = price

    def __str__(self):
        return f"Product \"{self.name}\" is cheap! Only 💲{self.price}"

p = Product('Cup', 5.99)
print(str(p))  # 'Product "Cup" is cheap! Only 💲5.99'
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Here, your Product object isn't just an object, it's a cheap product! Printing a string representation demonstrates exactly how you want it presented.

Never Trust User Input: Exception Handling

Always be prepared for user-input surprises. Safeguard your application by handling exceptions and consider trying on a try-except armor.

try:
    user_input = "1024"
    number = int(user_input) # Try converting input to an integer
except ValueError:
    number = 0 # Oops! Error? Assign a default value.
    print("Call the number police! We got a non-numeric input.")  


Who needs good users when your code is robust? Remember, user input is like Schrödinger's cat—it could be a number or not a number until observed (or parsed!).

Precision Matters: Float to String Conversion

When dealing with floats, precision is like a fine wine's taste—it matters! F-strings and the format() method can help make the numbers look perfect.

pi = 3.14159
# Three digits should be enough. Any more and we're just showing off.
print(f"{pi:.3f}")  # '3.142'


The ".3f" format specification in the f-string rounds the float to three decimal places.