Merge from master

pangram/pangram.py

@@ -1,2 +1,31 @@
-def is_pangram(sentence):
-    pass
+"""
+Pangram.
+
+You work for a company that sells fonts through their website. They'd like to
+show a different sentence each time someone views a font on their website.
+To give a  comprehensive sense of the font, the random sentences should use
+all the letters in the English alphabet.
+
+They're running a competition to get suggestions for sentences that they can
+use. You're in charge of checking the submissions to see if they are valid.
+"""
+
+
+def is_pangram(sentence: str) -> bool:
+    """
+    Verify that the random sentences uses all the letters in the English.
+
+    :param sentence: The sentence to check for pangram validity
+    :type sentence: str
+    :return: True if the sentence contains all 26 letters of the English,
+             False otherwise
+    :rtype: bool
+    """
+    # Empty string
+    if not sentence:
+        return False
+    # Convert sentence to lowercase and extract unique alphabetic characters
+    unique_letters: set = set(
+        char for char in sentence.lower() if char.isalpha()
+    )
+    return len(unique_letters) == 26

pangram/pangram_test.py

@@ -1,3 +1,5 @@
+# pylint: disable=C0114, C0115, C0116, R0904
+
 # These tests are auto-generated with test data from:
 # https://github.com/exercism/problem-specifications/tree/main/exercises/pangram/canonical-data.json
 # File last updated on 2023-07-19

solutions/python/pangram/1/pangram.py

@@ -0,0 +1,2 @@
+def is_pangram(sentence):
+    pass

solutions/python/pangram/2/pangram.py

@@ -0,0 +1,28 @@
+"""
+Pangram.
+
+You work for a company that sells fonts through their website. They'd like to show a
+different sentence each time someone views a font on their website. To give a
+comprehensive sense of the font, the random sentences should use all the letters
+in the English alphabet.
+
+They're running a competition to get suggestions for sentences that they can use.
+You're in charge of checking the submissions to see if they are valid.
+"""
+import string
+
+letters: str = string.ascii_lowercase
+
+
+def is_pangram(sentence: str) -> bool:
+    """
+    Verify that the random sentences uses all the letters in the English alphabet.
+
+    :param sentence: The sentence to check for pangram validity
+    :type sentence: str
+    :return: True if the sentence contains all 26 letters of the English alphabet, False otherwise
+    :rtype: bool
+    """
+    # Convert sentence to lowercase and extract unique alphabetic characters
+    unique_letters: set = set( char for char in sentence.lower() if char.isalpha())
+    return all(char in letters for char in unique_letters)