Initial commit: Runnable beginner Python exercises with self-checks and solutions. Powered by pythonbeginner.help

Part of the pythonbeginner.help project (https://pythonbeginner.help).

Author: python-beginner-help

.gitignore

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+__pycache__/
+*.pyc
+.venv/
+.idea/
+.DS_Store

README.md

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+# Python Beginner Exercises 🏋️🐍
+
+> Small, runnable practice exercises for new Python programmers — each with a built-in self-check and a worked solution.
+
+These exercises mirror the learning track on **[pythonbeginner.help](https://pythonbeginner.help)**. Read a topic, then practice it here.
+
+## How to use
+
+1. Make sure you have [Python installed](https://pythonbeginner.help/learn/) (3.8+).
+2. Open an exercise in the [`exercises/`](exercises) folder and complete the `TODO`.
+3. Run it — each file checks your answer with `assert` and prints ✅ when it passes:
+
+   ```bash
+   python exercises/01_variables.py
+   ```
+
+4. Stuck? Compare with the matching file in [`solutions/`](solutions).
+
+## Exercises
+
+| # | Exercise | Topic | Tutorial |
+|---|----------|-------|----------|
+| 01 | [Variables & types](exercises/01_variables.py) | Variables, `int`/`str` | [Learn →](https://pythonbeginner.help/learn/) |
+| 02 | [String methods](exercises/02_strings.py) | Strings, slicing | [Learn →](https://pythonbeginner.help/learn/) |
+| 03 | [Lists](exercises/03_lists.py) | Lists, indexing | [Learn →](https://pythonbeginner.help/learn/) |
+| 04 | [Loops](exercises/04_loops.py) | `for` / `range` | [Learn →](https://pythonbeginner.help/learn/) |
+| 05 | [Functions](exercises/05_functions.py) | `def`, return values | [Learn →](https://pythonbeginner.help/learn/) |
+
+## Run all exercises at once
+
+```bash
+for f in exercises/*.py; do echo "== $f =="; python "$f"; done
+```
+
+## More
+
+- 📚 Tutorials: **[pythonbeginner.help](https://pythonbeginner.help)**
+- 📋 [Python Cheatsheet](https://github.com/python-beginner-help/python-cheatsheet)
+- 🔧 [Python Error Fixes](https://github.com/python-beginner-help/python-error-fixes) — when an exercise throws an error you don't recognise.
+
+## License
+
+Released under [CC0 1.0](LICENSE) by **pythonbeginner.help** — copy, remix, and teach with these freely.

exercises/01_variables.py

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+"""Exercise 01 — Variables & types.
+
+Tutorial: https://pythonbeginner.help/learn/
+
+TODO:
+  1. Create a variable `name` holding your name as a string.
+  2. Create a variable `age` holding an age as an integer.
+  3. Create `age_text` that turns `age` into a string using str().
+
+Run:  python exercises/01_variables.py
+"""
+
+# --- your code below -------------------------------------------------------
+name = ...   # TODO: a string, e.g. "Ada"
+age = ...    # TODO: an integer, e.g. 36
+age_text = ...  # TODO: str(age)
+
+# --- self-check (don't edit) ----------------------------------------------
+assert isinstance(name, str) and name != "", "name should be a non-empty string"
+assert isinstance(age, int), "age should be an integer"
+assert age_text == str(age), "age_text should be str(age)"
+print(f"✅ Passed! {name} is {age_text} years old.")

exercises/02_strings.py

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+"""Exercise 02 — String methods & slicing.
+
+Tutorial: https://pythonbeginner.help/learn/
+
+TODO: given `phrase`, produce:
+  1. `shout`  -> the phrase in UPPERCASE
+  2. `first5` -> the first 5 characters
+  3. `words`  -> a list of the words
+
+Run:  python exercises/02_strings.py
+"""
+
+phrase = "python is fun"
+
+# --- your code below -------------------------------------------------------
+shout = ...    # TODO: phrase.upper()
+first5 = ...   # TODO: phrase[0:5]
+words = ...    # TODO: phrase.split()
+
+# --- self-check (don't edit) ----------------------------------------------
+assert shout == "PYTHON IS FUN", "shout should be the phrase uppercased"
+assert first5 == "pytho", "first5 should be the first 5 characters"
+assert words == ["python", "is", "fun"], "words should be the split words"
+print("✅ Passed!", shout, "|", first5, "|", words)

exercises/03_lists.py

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+"""Exercise 03 — Lists.
+
+Tutorial: https://pythonbeginner.help/learn/
+
+TODO: starting from `nums`:
+  1. Append the number 5.
+  2. Store the first item in `first` and the last in `last`.
+  3. Store a NEW sorted list in `ordered` (don't change `nums`).
+
+Run:  python exercises/03_lists.py
+"""
+
+nums = [3, 1, 2]
+
+# --- your code below -------------------------------------------------------
+# TODO: nums.append(5)
+first = ...     # TODO: nums[0]
+last = ...      # TODO: nums[-1]
+ordered = ...   # TODO: sorted(nums)
+
+# --- self-check (don't edit) ----------------------------------------------
+assert nums == [3, 1, 2, 5], "did you append 5 to nums?"
+assert first == 3, "first should be nums[0]"
+assert last == 5, "last should be nums[-1]"
+assert ordered == [1, 2, 3, 5], "ordered should be a sorted copy of nums"
+print("✅ Passed!", nums, "first:", first, "last:", last, "ordered:", ordered)

exercises/04_loops.py

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+"""Exercise 04 — Loops.
+
+Tutorial: https://pythonbeginner.help/learn/
+
+TODO: using a loop,
+  1. Build `squares` = [0, 1, 4, 9, 16] (squares of 0..4).
+  2. Set `total` = the sum of the numbers 1..10 inclusive.
+
+Run:  python exercises/04_loops.py
+"""
+
+# --- your code below -------------------------------------------------------
+squares = []
+# TODO: loop over range(5) and append i * i to squares
+
+total = 0
+# TODO: loop over range(1, 11) and add each number to total
+
+# --- self-check (don't edit) ----------------------------------------------
+assert squares == [0, 1, 4, 9, 16], "squares should be the squares of 0..4"
+assert total == 55, "total should be 1+2+...+10"
+print("✅ Passed!", "squares:", squares, "total:", total)

exercises/05_functions.py

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+"""Exercise 05 — Functions.
+
+Tutorial: https://pythonbeginner.help/learn/
+
+TODO:
+  1. Write `greet(name)` that returns "Hello, <name>!".
+  2. Write `is_even(n)` that returns True if n is even, else False.
+
+Run:  python exercises/05_functions.py
+"""
+
+# --- your code below -------------------------------------------------------
+def greet(name):
+    ...  # TODO: return f"Hello, {name}!"
+
+
+def is_even(n):
+    ...  # TODO: return n % 2 == 0
+
+
+# --- self-check (don't edit) ----------------------------------------------
+assert greet("Ada") == "Hello, Ada!", "greet should return 'Hello, Ada!'"
+assert is_even(4) is True, "is_even(4) should be True"
+assert is_even(7) is False, "is_even(7) should be False"
+print("✅ Passed!", greet("Ada"), "| is_even(4):", is_even(4))

solutions/01_variables.py

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+"""Solution 01 — Variables & types.  https://pythonbeginner.help/learn/"""
+
+name = "Ada"
+age = 36
+age_text = str(age)
+
+assert isinstance(name, str) and name != ""
+assert isinstance(age, int)
+assert age_text == str(age)
+print(f"✅ Passed! {name} is {age_text} years old.")

solutions/02_strings.py

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+"""Solution 02 — String methods & slicing.  https://pythonbeginner.help/learn/"""
+
+phrase = "python is fun"
+
+shout = phrase.upper()
+first5 = phrase[0:5]
+words = phrase.split()
+
+assert shout == "PYTHON IS FUN"
+assert first5 == "pytho"
+assert words == ["python", "is", "fun"]
+print("✅ Passed!", shout, "|", first5, "|", words)

solutions/03_lists.py

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+"""Solution 03 — Lists.  https://pythonbeginner.help/learn/"""
+
+nums = [3, 1, 2]
+
+nums.append(5)
+first = nums[0]
+last = nums[-1]
+ordered = sorted(nums)
+
+assert nums == [3, 1, 2, 5]
+assert first == 3
+assert last == 5
+assert ordered == [1, 2, 3, 5]
+print("✅ Passed!", nums, "first:", first, "last:", last, "ordered:", ordered)