seed: curriculum content

1.solar-system/3.strings/06.the-counter/index.md

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+---
+type: challenge
+title: "The Counter"
+xp: 75
+duration: 30
+difficulty: 3
+---
+
+# The Counter
+
+> **[INCOMING — Mission Control, Earth]**
+>
+> Cadet, time to count things in text. Three counts:
+>
+> - **Total length** — `len(s)`
+> - **Word count** — `len(s.split())` (split breaks on whitespace)
+> - **`a` count** — `s.lower().count("a")` returns how many `a`s
+>
+> Implement `count(s)` that returns a dict with three keys:
+>
+> - `length` — total chars including spaces
+> - `words` — word count
+> - `a_count` — number of lowercase `a`s after lowercasing
+>
+> [END TRANSMISSION]
+
+## Your Task
+
+In `starter/starter.py`, build the dict using `len()`, `.split()`,
+`.lower()`, `.count()`.
+
+## Objectives
+
+- `count("Hello andromeda")` → `{"length": 15, "words": 2, "a_count": 2}`
+- All three keys present and correct for any sentence

1.solar-system/3.strings/06.the-counter/starter/starter.py

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+def count(s):
+    """Count three things in a sentence and return a dict.
+
+    Keys:
+      "length"  — total characters in s (including spaces)
+      "words"   — number of whitespace-separated words
+      "a_count" — count of lowercase 'a's after lowercasing s
+
+    Helpers:
+      len(s)             — char count
+      len(s.split())     — word count
+      s.lower().count("a") — number of 'a's, case-insensitive
+
+    count("Hello andromeda") -> {"length": 15, "words": 2, "a_count": 2}
+    """
+    pass

1.solar-system/3.strings/06.the-counter/testing/test_solution.py

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+from solution import count
+
+
+def test_hello_andromeda():
+    assert count("Hello andromeda") == {"length": 15, "words": 2, "a_count": 2}
+
+
+def test_all_systems_nominal():
+    assert count("All systems nominal") == {"length": 19, "words": 3, "a_count": 2}
+
+
+def test_caps_with_a():
+    assert count("MISSION READY ALPHA") == {"length": 19, "words": 3, "a_count": 3}
+
+
+def test_quick_brown_fox():
+    assert count("the quick brown fox jumps over") == {
+        "length": 30,
+        "words": 6,
+        "a_count": 0,
+    }