From 44763336cd6734b8a3bceaf4058ec6ca6ac8ae7e Mon Sep 17 00:00:00 2001
From: Leodanis Pozo Ramos <lpozor78@gmail.com>
Date: Mon, 8 Sep 2025 13:02:18 +0200
Subject: [PATCH 1/4] Sample code for the article on first steps with Python

---
 python-first-steps/README.md       |  3 ++
 python-first-steps/boolean.py      | 15 +++++++++
 python-first-steps/bytes.py        | 23 ++++++++++++++
 python-first-steps/classes.py      | 12 +++++++
 python-first-steps/comments.py     |  6 ++++
 python-first-steps/conditionals.py | 16 ++++++++++
 python-first-steps/dictionaries.py | 13 ++++++++
 python-first-steps/for_loops.py    | 16 ++++++++++
 python-first-steps/hello.py        |  1 +
 python-first-steps/imports.py      | 11 +++++++
 python-first-steps/keywords.py     |  5 +++
 python-first-steps/lists.py        | 50 ++++++++++++++++++++++++++++++
 python-first-steps/number.py       | 19 ++++++++++++
 python-first-steps/sets.py         | 25 +++++++++++++++
 python-first-steps/strings.py      | 36 +++++++++++++++++++++
 python-first-steps/tuples.py       | 30 ++++++++++++++++++
 python-first-steps/variables.py    |  8 +++++
 python-first-steps/while_loops.py  |  7 +++++
 18 files changed, 296 insertions(+)
 create mode 100644 python-first-steps/README.md
 create mode 100644 python-first-steps/boolean.py
 create mode 100644 python-first-steps/bytes.py
 create mode 100644 python-first-steps/classes.py
 create mode 100644 python-first-steps/comments.py
 create mode 100644 python-first-steps/conditionals.py
 create mode 100644 python-first-steps/dictionaries.py
 create mode 100644 python-first-steps/for_loops.py
 create mode 100644 python-first-steps/hello.py
 create mode 100644 python-first-steps/imports.py
 create mode 100644 python-first-steps/keywords.py
 create mode 100644 python-first-steps/lists.py
 create mode 100644 python-first-steps/number.py
 create mode 100644 python-first-steps/sets.py
 create mode 100644 python-first-steps/strings.py
 create mode 100644 python-first-steps/tuples.py
 create mode 100644 python-first-steps/variables.py
 create mode 100644 python-first-steps/while_loops.py

diff --git a/python-first-steps/README.md b/python-first-steps/README.md
new file mode 100644
index 0000000000..3004d94fd3
--- /dev/null
+++ b/python-first-steps/README.md
@@ -0,0 +1,3 @@
+# How to Use Python: Your First Steps
+
+This folder provides the code examples for the Real Python tutorial [How to Use Python: Your First Steps](https://realpython.com/python-first-steps/).
diff --git a/python-first-steps/boolean.py b/python-first-steps/boolean.py
new file mode 100644
index 0000000000..923e2a2eb5
--- /dev/null
+++ b/python-first-steps/boolean.py
@@ -0,0 +1,15 @@
+# Comparisons
+print(2 < 5)
+print(4 > 10)
+print(4 <= 3)
+print(3 >= 3)
+print(5 == 6)
+print(6 != 9)
+
+# The bool() function
+print(bool(0))
+print(bool(1))
+print(bool(""))
+print(bool("a"))
+print(bool([]))
+print(bool([1, 2, 3]))
diff --git a/python-first-steps/bytes.py b/python-first-steps/bytes.py
new file mode 100644
index 0000000000..85766232d9
--- /dev/null
+++ b/python-first-steps/bytes.py
@@ -0,0 +1,23 @@
+# Literal syntax (ASCII only)
+print(b"Hello")
+# From an iterable of integers (0 to 255)
+print(bytes([72, 101, 108, 108, 111]))
+# By encoding a string
+print("café".encode("utf-8"))
+
+data = b"caf\xc3\xa9"
+data.decode("utf-8")
+print(data)
+
+packet = b"ABCDEF"
+print(len(packet))
+print(packet[0])
+print(packet[1:4])
+
+buffer = bytearray(b"ABC")
+buffer[0] = 97
+print(buffer)
+print(bytes(buffer))
+
+print(b"Hello".hex())
+print(bytes.fromhex("48656c6c6f"))
diff --git a/python-first-steps/classes.py b/python-first-steps/classes.py
new file mode 100644
index 0000000000..c315a3f4c2
--- /dev/null
+++ b/python-first-steps/classes.py
@@ -0,0 +1,12 @@
+class Dog:
+    def __init__(self, name, age):
+        self.name = name
+        self.age = age
+
+    def bark(self):
+        return "Woof! Woof!"
+
+
+fido = Dog("Fido", 3)
+print(fido.name, fido.age)
+print(fido.bark())
diff --git a/python-first-steps/comments.py b/python-first-steps/comments.py
new file mode 100644
index 0000000000..0d34b5b53d
--- /dev/null
+++ b/python-first-steps/comments.py
@@ -0,0 +1,6 @@
+# This is a comment on its own line
+
+greeting = "Hello, World!"  # This is an inline comment
+
+# This is a long comment that requires
+# two lines to be complete.
diff --git a/python-first-steps/conditionals.py b/python-first-steps/conditionals.py
new file mode 100644
index 0000000000..cb37af76ae
--- /dev/null
+++ b/python-first-steps/conditionals.py
@@ -0,0 +1,16 @@
+age = 21
+if age >= 18:
+    print("You're a legal adult")
+
+age = 16
+if age >= 18:
+    print("You're a legal adult")
+else:
+    print("You're NOT an adult")
+
+age = 18
+if age > 18:
+    print("You're over 18 years old")
+elif age == 18:
+    print("You're exactly 18 years old")
+
diff --git a/python-first-steps/dictionaries.py b/python-first-steps/dictionaries.py
new file mode 100644
index 0000000000..623a29b30b
--- /dev/null
+++ b/python-first-steps/dictionaries.py
@@ -0,0 +1,13 @@
+john = {"name": "John Doe", "age": 25, "job": "Python Developer"}
+print(john)
+jane = dict(name="Jane Doe", age=24, job="Web Developer")
+print(jane)
+print(john["name"])
+print(john["age"])
+
+# Retrieve all the keys
+print(john.keys())
+# Retrieve all the values
+print(john.values())
+# Retrieve all the key-value pairs
+print(john.items())
diff --git a/python-first-steps/for_loops.py b/python-first-steps/for_loops.py
new file mode 100644
index 0000000000..229e9b3520
--- /dev/null
+++ b/python-first-steps/for_loops.py
@@ -0,0 +1,16 @@
+for i in (1, 2, 3, 4, 5):
+    print(i)
+else:
+    print("The loop wasn't interrupted")
+
+for i in (1, 2, 3, 4, 5):
+    if i == 3:
+        print("Number found:", i)
+        break
+else:
+    print("Number not found")
+
+for i in (1, 2, 3, 4, 5):
+    if i == 3:
+        continue
+    print(i)
diff --git a/python-first-steps/hello.py b/python-first-steps/hello.py
new file mode 100644
index 0000000000..7df869a15e
--- /dev/null
+++ b/python-first-steps/hello.py
@@ -0,0 +1 @@
+print("Hello, World!")
diff --git a/python-first-steps/imports.py b/python-first-steps/imports.py
new file mode 100644
index 0000000000..a16b8afdae
--- /dev/null
+++ b/python-first-steps/imports.py
@@ -0,0 +1,11 @@
+import math  # Module import
+
+print(math.sqrt(16))
+
+from math import sqrt  # Function import
+
+print(sqrt(25))
+
+from math import pi as PI  # Import with alias
+
+print(PI)
diff --git a/python-first-steps/keywords.py b/python-first-steps/keywords.py
new file mode 100644
index 0000000000..0c0e861558
--- /dev/null
+++ b/python-first-steps/keywords.py
@@ -0,0 +1,5 @@
+import keyword
+
+print(keyword.kwlist)
+
+print(keyword.softkwlist)
diff --git a/python-first-steps/lists.py b/python-first-steps/lists.py
new file mode 100644
index 0000000000..81868dcd0b
--- /dev/null
+++ b/python-first-steps/lists.py
@@ -0,0 +1,50 @@
+# Define an empty list
+empty = []
+print(empty)
+# Define a list of numbers
+numbers = [1, 2, 3, 100]
+print(numbers)
+# Modify the list in place
+numbers[3] = 200
+print(numbers)
+# Define a list of strings
+print(["batman", "superman", "spiderman"])
+# Define a list of objects with different data types
+print(["Hello World", [4, 5, 6], False])
+
+# Indexing
+numbers = [1, 2, 3, 4]
+print(numbers[0])
+print(numbers[1])
+superheroes = ["batman", "superman", "spiderman"]
+print(superheroes[-1])
+print(superheroes[-2])
+
+# Slicing
+numbers = [1, 2, 3, 4]
+new_list = numbers[0:3]
+print(new_list)
+
+# Nested lists
+mixed_types = ["Hello World", [4, 5, 6], False]
+print(mixed_types[0][6])
+print(mixed_types[1][2])
+
+# Concatenation
+fruits = ["apples", "grapes", "oranges"]
+veggies = ["corn", "kale", "mushrooms"]
+print(fruits + veggies)
+
+# Built-in functions
+numbers = [1, 2, 3, 4]
+print(len(numbers))
+
+# List methods
+fruits = ["apples", "grapes", "oranges"]
+fruits.append("blueberries")
+print(fruits)
+fruits.sort()
+print(fruits)
+numbers = [1, 2, 3, 4]
+numbers.pop(2)
+print(numbers)
diff --git a/python-first-steps/number.py b/python-first-steps/number.py
new file mode 100644
index 0000000000..69f1ececac
--- /dev/null
+++ b/python-first-steps/number.py
@@ -0,0 +1,19 @@
+# Addition
+print(5 + 3)
+# Subtraction
+print(5 - 3)
+# Multiplication
+print(5 * 3)
+# True division
+print(5 / 3)
+# Floor division
+print(5 // 3)
+# Modulus (returns the remainder from division)
+print(5 % 3)
+# Power
+print(5**3)
+
+# Methods
+print((10.0).is_integer())
+print((10.2).is_integer())
+print((10).bit_length())
diff --git a/python-first-steps/sets.py b/python-first-steps/sets.py
new file mode 100644
index 0000000000..34fc49a9ac
--- /dev/null
+++ b/python-first-steps/sets.py
@@ -0,0 +1,25 @@
+print({"John", "Jane", "Linda"})
+print(set(["David", "Mark", "Marie"]))
+empty = set()
+print(empty)
+
+# Unique elements
+print(set([1, 2, 2, 3, 4, 5, 3]))
+
+# Built-in functions
+employees = {"John", "Jane", "Linda"}
+print(len(employees))
+
+# Set operations
+primes = {2, 3, 5, 7}
+evens = {2, 4, 6, 8}
+print(primes | evens)  # Union
+print(primes & evens)  # Intersection
+print(primes - evens)  # Difference
+
+# Set methods
+primes = {2, 3, 5, 7}
+primes.add(11)
+print(primes)
+primes.remove(11)
+print(primes)
diff --git a/python-first-steps/strings.py b/python-first-steps/strings.py
new file mode 100644
index 0000000000..8685ba9e0a
--- /dev/null
+++ b/python-first-steps/strings.py
@@ -0,0 +1,36 @@
+# Use single quotes
+print("Hello there!")
+# Use double quotes
+print("Welcome to Real Python!")
+# Use triple quotes
+print("""Thanks for joining us!""")
+# Escape characters
+print("I can't believe it!")
+print("can't")
+
+# Concatenation
+print("Happy" + " " + "pythoning!")
+
+# Built-in functions
+print(len("Happy pythoning!"))
+
+# String methods
+print(" ".join(["Happy", "pythoning!"]))
+print("Happy pythoning!".upper())
+print("HAPPY PYTHONING!".lower())
+name = "John Doe"
+age = 25
+print("My name is {0} and I'm {1} years old".format(name, age))
+
+# f-strings
+print(f"My name is {name} and I'm {age} years old")
+
+# Indexing
+welcome = "Welcome to Real Python!"
+print(welcome[0])
+print(welcome[11])
+print(welcome[-1])
+
+# Slicing
+print(welcome[0:7])
+print(welcome[11:22])
diff --git a/python-first-steps/tuples.py b/python-first-steps/tuples.py
new file mode 100644
index 0000000000..8b6a8762eb
--- /dev/null
+++ b/python-first-steps/tuples.py
@@ -0,0 +1,30 @@
+employee = ("Jane", "Doe", 31, "Software Developer")
+print(employee)
+print(type((1)))
+print(type((1,)))
+
+# Concatenation
+first_tuple = (1, 2)
+second_tuple = (3, 4)
+third_tuple = first_tuple + second_tuple
+print(third_tuple)
+
+# Built-in functions
+numbers = (1, 2, 3)
+print(len(numbers))
+numbers = (1, 2, 3)
+print(list(numbers))
+
+# Tuple methods
+letters = ("a", "b", "b", "c", "a")
+print(letters.count("a"))
+print(letters.count("c"))
+print(letters.count("d"))
+print(letters.index("a"))
+print(letters.index("c"))
+print(letters.index("d"))
+
+# Indexing and slicing
+employee = ("Jane", "Doe", 31, "Software Developer")
+print(employee[0])
+print(employee[1:3])
diff --git a/python-first-steps/variables.py b/python-first-steps/variables.py
new file mode 100644
index 0000000000..cfab225ede
--- /dev/null
+++ b/python-first-steps/variables.py
@@ -0,0 +1,8 @@
+numbers = [1, 2, 3, 4, 5]
+print(numbers)
+
+first_num = 1
+print(first_num)
+
+pi = 3.141592653589793
+print(pi)
diff --git a/python-first-steps/while_loops.py b/python-first-steps/while_loops.py
new file mode 100644
index 0000000000..966ce48699
--- /dev/null
+++ b/python-first-steps/while_loops.py
@@ -0,0 +1,7 @@
+count = 1
+while count < 5:
+    print(count)
+    count += 1
+else:
+    print("The loop wasn't interrupted")
+

From 4e4de928bd76b6d2d977ec668c1f2d773b85a1b2 Mon Sep 17 00:00:00 2001
From: Leodanis Pozo Ramos <lpozor78@gmail.com>
Date: Mon, 8 Sep 2025 13:09:04 +0200
Subject: [PATCH 2/4] Fix linter issues

---
 python-first-steps/imports.py | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/python-first-steps/imports.py b/python-first-steps/imports.py
index a16b8afdae..199b8c38e6 100644
--- a/python-first-steps/imports.py
+++ b/python-first-steps/imports.py
@@ -1,11 +1,9 @@
 import math  # Module import
+from math import pi as PI  # Import with alias
+from math import sqrt  # Function import
 
 print(math.sqrt(16))
 
-from math import sqrt  # Function import
-
 print(sqrt(25))
 
-from math import pi as PI  # Import with alias
-
 print(PI)

From 5a5f81eaeff4d2c9ef6c73ae832ed2df2b1770ea Mon Sep 17 00:00:00 2001
From: Leodanis Pozo Ramos <lpozor78@gmail.com>
Date: Mon, 8 Sep 2025 13:12:57 +0200
Subject: [PATCH 3/4] More fixes

---
 python-first-steps/conditionals.py | 4 +++-
 python-first-steps/while_loops.py  | 2 +-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/python-first-steps/conditionals.py b/python-first-steps/conditionals.py
index cb37af76ae..c0f8367762 100644
--- a/python-first-steps/conditionals.py
+++ b/python-first-steps/conditionals.py
@@ -1,16 +1,18 @@
 age = 21
+
 if age >= 18:
     print("You're a legal adult")
 
 age = 16
+
 if age >= 18:
     print("You're a legal adult")
 else:
     print("You're NOT an adult")
 
 age = 18
+
 if age > 18:
     print("You're over 18 years old")
 elif age == 18:
     print("You're exactly 18 years old")
-
diff --git a/python-first-steps/while_loops.py b/python-first-steps/while_loops.py
index 966ce48699..8c2276a0f7 100644
--- a/python-first-steps/while_loops.py
+++ b/python-first-steps/while_loops.py
@@ -1,7 +1,7 @@
 count = 1
+
 while count < 5:
     print(count)
     count += 1
 else:
     print("The loop wasn't interrupted")
-

From a1ab1bb58101354600793841296cc13fcbb32197 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bartosz=20Zaczy=C5=84ski?= <bartosz.zaczynski@gmail.com>
Date: Sun, 21 Sep 2025 16:37:55 +0200
Subject: [PATCH 4/4] Final QA

---
 python-first-steps/lists.py  | 2 +-
 python-first-steps/tuples.py | 5 ++++-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/python-first-steps/lists.py b/python-first-steps/lists.py
index 81868dcd0b..e7722c9466 100644
--- a/python-first-steps/lists.py
+++ b/python-first-steps/lists.py
@@ -32,7 +32,7 @@
 
 # Concatenation
 fruits = ["apples", "grapes", "oranges"]
-veggies = ["corn", "kale", "mushrooms"]
+veggies = ["corn", "kale", "spinach"]
 print(fruits + veggies)
 
 # Built-in functions
diff --git a/python-first-steps/tuples.py b/python-first-steps/tuples.py
index 8b6a8762eb..0820f285ee 100644
--- a/python-first-steps/tuples.py
+++ b/python-first-steps/tuples.py
@@ -22,7 +22,10 @@
 print(letters.count("d"))
 print(letters.index("a"))
 print(letters.index("c"))
-print(letters.index("d"))
+try:
+    print(letters.index("d"))
+except Exception as e:
+    print(repr(e))
 
 # Indexing and slicing
 employee = ("Jane", "Doe", 31, "Software Developer")