Create unit9_ex9.3.1.py

lironmiz · web-flow · commit c846da73bf69 · 2023-01-05T07:25:12.000+02:00
diff --git a/unit9_ex9.3.1.py b/unit9_ex9.3.1.py
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+# exercise 9.3.1 from unit 9
+'''
+Write a function called my_mp3_playlist defined as follows:
+
+def my_mp3_playlist(file_path):
+The function accepts as a parameter a path to the file (string).
+The file represents a playlist of songs and has a fixed format consisting of the name of the song, the name of the performer (singer/band) and the length of the song, separated by a semicolon (;) without spaces.
+
+An example of an input file called songs.txt:
+
+Tudo Bom; Static and Ben El Tavori; 5:13;
+I Gotta Feeling; The Black Eyed Peas; 4:05;
+Instrumental; Unknown; 4:15;
+Paradise; Coldplay; 4:23;
+Where is the love?; The Black Eyed Peas; 4:13;
+The function returns a tuple in which:
+
+The first member is a string representing the name of the longest song in the file 
+(it means the longest song, assume all lengths are different).
+The second member is a number representing the number of songs the file contains.
+The third member is a string representing the name of the operation that appears in
+the file the largest number of times (assume there is only one).
+An example of running the my_mp3_playlist function on the songs.txt file
+>>> print(my_mp3_playlist(r"c:\my_files\songs.txt"))
+("Tudo Bom", 5, "The black Eyed Peas")
+'''
+def my_mp3_playlist(file_path):
+    longest_song = ""
+    longest_song_length = 0
+    song_count = 0
+    most_common_artist = ""
+    artist_counts = {}
+
+    with open(file_path, 'r') as f:
+        for line in f:
+            song, artist, length = line.strip().split(';')
+            length_parts = length.split(':')
+            length_minutes = int(length_parts[0])
+            length_seconds = int(length_parts[1])
+            total_length = length_minutes * 60 + length_seconds
+
+            if total_length > longest_song_length:
+                longest_song = song
+                longest_song_length = total_length
+
+            if artist in artist_counts:
+                artist_counts[artist] += 1
+            else:
+                artist_counts[artist] = 1
+
+            song_count += 1
+
+    most_common_artist = max(artist_counts, key=artist_counts.get)
+
+    return (longest_song, song_count, most_common_artist)
+
+def main():
+    result = my_mp3_playlist(r"c:\my_files\songs.txt")
+    print(result)
+
+if __name__ == "__main__":
+    main()
