Merge remote-tracking branch 'upstream/master'

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diff --git a/challenge-103/abigail/python/ch-2.py b/challenge-103/abigail/python/ch-2.py
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+#!/opt/local/bin/python
+
+#
+# See ../README.md
+#
+
+#
+# Run as python ch-2.py < input-file
+#
+
+#
+# We're reading a start time, the current time, and a file name
+# from STDIN, separated by white space. The file contains the
+# tracks played.
+#
+
+import fileinput
+
+for line in fileinput . input ():
+    start_time, current_time, file_name = line . split ()
+
+    #
+    # You need a 64 bit integer for this; 32 bits of holds
+    # a five week vacation in milliseconds, but the author 
+    # of the puzzle lives somewhere were people take 14 week
+    # holidays...
+    #
+    time_diff = (int (current_time) - int (start_time)) * 1000
+
+    #
+    # Parse the media file; store the track into an array tracks.
+    #
+    tracks = []
+    total_time = 0
+    for track in open (file_name, "r"):
+        play_time, title = track . strip () . split (",", 2)
+        play_time = int (play_time)
+        tracks . append ([play_time, title])
+        total_time = total_time + play_time
+
+    #
+    # We're not interested in playing full loops.
+    #
+    time_diff = time_diff % total_time
+
+    #
+    # Find the current track playing. If $time_diff is less than the
+    # play time of the track, this is the track currently playing. If
+    # so, print the track name (with quotes, as given in the example --
+    # although they don't belong there, as they're from the CSV encoding;
+    # for that reason, we won't deescape anything else either). Otherwise
+    # (track length is shorter than $time_diff), we subtrack the length
+    # of the track from $time_diff, and continue checking the next track.
+    #
+    for track in tracks:
+        if time_diff - track [0] < 0:
+            time_diff = int  (time_diff / 1000)
+            hours     = int  (time_diff / 3600)
+            minutes   = int ((time_diff % 3600) / 60)
+            seconds   =       time_diff         % 60
+
+            if hours > 0:
+                format_str = "{0}\n{1:02d}:{2:02d}:{3:02d}"
+            else:
+                format_str = "{0}\n{2:02d}:{3:02d}"
+
+            print (format_str . format (track [1], hours, minutes, seconds))
+            break
+        else:
+            time_diff = time_diff - track [0]
+