Gain insights into Python 3 by learning basic concepts like keywords and data types, and delving into 50 code puzzles that enhance your understanding of classes and functions.

This course acts as a stepping stone to becoming a Python master. Before getting into advanced concepts like classes and functions, the course begins with Python's basic concepts, such as keywords and data types. Later in this course, you'll be going through 50 code puzzles that will teach you different concepts in Python 3.

An Intro to Python 3

# Puzzle 38

**What is the output of the following code?**

> **Note**: Enter the output you guessed. If your guess is multi-lined, **enter each value separated by the spacebar**. Then, press the **Run** button, and your new Elo will be calculated. Don't forget to save your Elo rating.


#############################
## id 370
## Puzzle Elo 1558
## Correctly solved 89 %
#############################
def make_incrementor(n):
  return lambda x: x + n

f = make_incrementor(42)
print(f(0))
print(f(1))

## The lambda function


This puzzle introduces an advanced language feature: **lambda functions**.
Lambda functions exist in a wide range of languages for functional programming.

>A lambda function is an anonymous function without an identifier.

After the `lambda` keyword, the function takes one or more arbitrary arguments. The arguments are comma-separated and finished by a colon. After, the colon follows a single expression. Yet, this expression can consist of complex calculations using the specified argument variables. The lambda function then returns the result of this expression. Hence, lambda functions are syntactical shortcuts for a subclass of normal Python functions.

In the puzzle, the function `make_incrementor` creates a lambda function at runtime. The created lambda function increases an element `x` by a fixed value `n`. For example, the `incrementor function` in the puzzle increments a value by `42`. We assign this function to the variable `f`. Then, we `print` the results when incrementing the values `0` and `1` by the incrementor `42`.

## Solution

The correct solution is:
```
42 
43
```

Examine the lambda function, multi-line strings, escaping, and Fibonacci in Python.

Introduction

A Quick Overview of the Python Language

Fifty Code Puzzles

The Final Remarks

Puzzles 38 to 41

Puzzle 38

The lambda function