I am trying to search for the key in the dictionary of songs. They keys are the song titles, and the value is the length of the song. I want to search for the song in the dictionary, and then print out that song and its time. I have figured out searching for the song, but can't remember how to bring out its value as well. Here is what I currently have.
def getSongTime(songDictionary):
requestedSong=input("Enter song from playlist: ")
for song in list(songDictionary.keys()):
if requestedSong in songDictionary.keys():
print(requestedSong,value)
There'no need to iterate through the dictionary keys - quick lookup is one of the main reasons for using a dictionary instead of a tuple or list.
With a try/except:
def getSongTime(songDictionary):
requestedSong=input("Enter song from playlist: ")
try:
print(requestedSong, songDictionary[requestedSong])
except KeyError:
print("Not found")
With the dict's get
method:
def getSongTime(songDictionary):
requestedSong=input("Enter song from playlist: ")
print(requestedSong, songDictionary.get(requestedSong, "Not found"))
I don't think using try catch is good for this task. Simply use the operator in
requestedSong=input("Enter song from playlist: ")
if requestedSong in songDictionary:
print songDictionary[requestedSong]
else:
print 'song not found'
And I strongly recommend you to read this article http://www.tutorialspoint.com/python/python_dictionary.htm
Also check out this questions too: check if a given key exists in dictionary
try vs if
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