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Sorting a dictionary in Python

Posted by admin (Graham Ellis), 29 April 2004
A naughty title, this one ... you cannot sort a python dictionary.

Use the keys method to get a list of the keys, and sort the keys - then iterate through the sorted list to access the dictionary members in the order selected by sort.

info = {"PHP":"17th May",
       "Perl":"15th June",
       "Java":"7th June",
       "Python":"26th May",
       "Tcl":"12th July",
       "MySQL":"24th May"}

topics = info.keys()

for topic in topics:
   print "Next",topic,"course starts",info[topic]


Next Java course starts 7th June
Next MySQL course starts 24th May
Next PHP course starts 17th May
Next Perl course starts 15th June
Next Python course starts 26th May
Next Tcl course starts 12th July

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