When you start learning Python, one of the first big steps is understanding variables.
A variable lets your program remember information.
But the next step is even more powerful:
using that information to calculate results.
I recently published a new Spanish guide in my Python from scratch series:
Operadores y expresiones: haz que Python calcule por ti
The guide explains operators and expressions with simple examples, without heavy theory.
The main idea is:
A variable stores information.
An operator tells Python what to do.
An expression produces a result.
For example:
precio = 12000
cantidad = 3
subtotal = precio * cantidad
descuento = subtotal * 0.10
total = subtotal - descuento
print(total)
The guide covers:
- what an operator is
- what an expression is
- basic arithmetic operators in Python
- how to use variables inside calculations
- how to store calculated results
- why parentheses matter
- common beginner mistakes
- a small final challenge
Some basic examples from the guide are:
print(5 + 3)
print(10 - 4)
print(6 * 2)
print(20 / 5)
And one important idea for beginners:
resultado_sin_parentesis = 5 + 3 * 2
resultado_con_parentesis = (5 + 3) * 2
Both lines look similar, but they can produce different results because parentheses change the order of the calculation.
This guide is written in Spanish and is designed for people who are learning Python from zero.
Full guide:
What was the first programming concept that made you feel you were finally understanding how code works?
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