A method of translating a Python implementation list into a dictionary data structure

The examples in this paper describe the method of translating the Python implementation list into a dictionary data structure. Share to everyone for your reference, as follows:

' [{' symbol ': 101, ' sort ': 1, ' name ': ' AAAA '}, {' symbol ': 102, ' sort ': 2, ' name ': ' bbbb '}, {' symbol ': 103, ' sort ': 3, ' Name ': ' CCCC '}, {' symbol ': 104, ' sort ': 4, ' name ': ' dddd '}, {' symbol ': ' + ', ' sort ': 5, ' name ': ' Eeee '}, {' symbol ': 10  6, ' sort ': 6, ' name ': ' FFFF '}, {' symbol ': 107, ' sort ': 7, ' name ': ' GGGG '}, {' symbol ': 108, ' sort ': 8, ' name ': ' HHhH '}, {' symbol ': 109, ' sort ': 9, ' name ': ' IIII '}]  Converted to the following structure, it is easy to get the record value by ID {101: {' sort ': 1, ' symbol ': ' 101, ' name ': ' AAAA '}, 102: {' sort ': 2, ' symbol ': 102, ' name ': ' BBBB '}, 103: {' sort ': 3, ' symbol ': ' 103 ', ' name ': ' CCCC '}, 104: {' sort ': 4, ' symbol ': ' 104 ', ' name ': ' dddd '}, $: {' sort ': 5, ' sym Bol ':, ' name ': ' Eeee '}, 106: {' sort ': 6, ' symbol ': 106, ' name ': ' FFFF '}, 107: {' sort ': 7, ' symbol ': 107, ' name ': ' GG    GG '}, 108: {' sort ': 8, ' symbol ': 108, ' name ': ' HHhH '}, 109: {' sort ': 9, ' symbol ': 109, ' name ': ' IIII '} ' students = [ {' symbol ': 101, ' sort ': 1, ' name ': ' AAAA '}, {' symbol ': 102, ' sort ': 2, ' name ': ' bbbb '}, {' SymboL ': 103, ' sort ': 3, ' name ': ' CCCC '}, {' symbol ': 104, ' sort ': 4, ' name ': ' dddd '}, {' symbol ': ' + ', ' sort ': 5, ' name ': ' Eeee '}, {' symbol ': 106, ' sort ': 6, ' name ': ' FFFF '}, {' symbol ': 107, ' sort ': 7, ' name ': ' GGGG '}, {' symbol ': 108, ' Sort ': 8, ' name ': ' HHhH '}, {' symbol ': 109, ' sort ': 9, ' name ': ' IIII '}]symbol_list = map (lambda x: (x.get (' symbol '), x), students) print symbol_listprint '-----------------------------------------' Print dict (symbol_list) #value_list = Map (lambda x:x, students) # # #print dict (Zip (symbol_list, value_list)) # # #student = {# 101: {' symbol ': 101, ' sort ': 1, ' n Ame ': ' AAAA '}#}# #student = [# {101: {' symbol ': 101, ' sort ': 1, ' name ': ' AAAA '}}#]#

Sorting usage:

Students = [      {' name ': ' Zhangsan ', ' price ': 20.01, ' date ': ' 2015-01-09t01:00:00z '},      {' name ': ' Lisi ', ' price ' : 10.01, ' date ': ' 2013-01-09t01:00:00z '},      {' name ': ' Wangwu ', ' price ': 0.01, ' date ': ' 2012-01-09t01:00:00z '}] Print Sorted (students, KEY=LAMBDA s:s["name"]) print sorted (students, KEY=LAMBDA s:s["Price"], reverse=true) print sorted ( Students, Key=lambda s:s["date"], reverse=true) AA = sorted (students, KEY=LAMBDA s:s["Price"], reverse=true) sorted (AA, Key=lambda s:s["Date"], reverse=true) Symbol_arr = [
 
  
   
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    ] Sorted (Symbol_ Arr, Key=lambda S:s.amount, reverse=true)
   
    
  
   
 
  

I hope this article is helpful for Python program design.

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