Day3-python Study Notes (iii)

one. Dictionary Operations
# string, Integer, list, dictionary
# stus = [
# [' Little Fu ', ' + ', ' nan ', ' xxx ', ' 20k ']
# [' Little Fu ', ' + ', ' nan ', ' xxx ', ' 20k ']
# [' Little Fu ', ' + ', ' nan ', ' xxx ', ' 20k ']
# [' Little Fu ', ' + ', ' nan ', ' xxx ', ' 20k ']

#字典 k=v, convenient value, fast speed
D = {' name ': ' Little Fu ',
' Age ': 18,
' Sex ': ' Male ',
' Addr ': ' Fanyu District ',
' Money ': 100000
}
#字典 Check
#print (d[' name ')
#print (d[' money ')
#print (d[' haha ') if you write a nonexistent key, you will get an error.
# Print (D.get (' sdasd ')) #查询无此key, return none, nonexistent key, no error
# Print (D.get (' sdasd ', ' Can't find ') #

#字典 Increase
# d[' Height ']=178
#d. SetDefault (' weight ', 130) can only be added and cannot be modified
# #字典是无序的,
# print (d)

#字典 modification
# d[' height ']=200# if this key exists, modify his value and if key does not exist, add a

#字典 Delete
# d.pop (' sex ') #删除某个key
#d. Popitem () #随机删除一个
#del d[' age ')
#d. Clear () #清空字典
# Print (D.keys ())
# Print (D.values ())
# d.hash_key (' addr ') #python2里面字典有这个方法, do you have this key
# if ' addr ' in D:
# print (' addr ')

#for k,v in D.items (): #循环字典, turn dictionary key,value into a two-dimensional array with poor performance
#print (D.items ())

# for K in D: #性能好
# print (K,d[k])
# Print (K,d.get (k))

res = list (D.items ())
Print (Res[1])
# # int () #转换成int类型
# # str () #转换成字符串类型
# # list () #转换成list类型
# res = list (D.items ())
# print (res[2])

#数组, dictionary nesting queries, etc.

# stus=[

# {' name ': ' Bin ',

# ' age ': 18,
# ' sex ': ' Male ',
# ' addr ': ' Changping District ',
# ' money ': 100000,
# ' Jinku ': {
# ' $ ': 50000,
# ' ￥ ': 8000
#
# }
# },
# {' name ': ' Bin 1 ',
# ' age ': 18,
# ' sex ': ' Male ',
# ' addr ': ' Changping District ',
# ' money ': 100000,
# ' bag ': {
# ' Nike ': ' A car '
#
# }
# }
# ]
# Print (stus[0][' Jinku ' [' ￥ '])
# #print (stus[' TLX ' [' money '])
# Print (stus[1][' bag ' [' Nike '])

Stus = {
' YBQ ': {
' Age ': 18,
' Sex ': ' Male ',
' Addr ': ' Changping District ',
' Money ': 10000000,
' Jinku ': {
' CCB card ': 80000,
' Business card ': 800000,
' Investment card ': 8000000
}
},
' TLX ': {
' Age ': 19,
' Sex ': ' Woman ',
' Addr ': ' Changping District ',
' Money ': 10000000,
' Huazhuangpin ':
[' Cha ', ' haha ']

},
' MPP ': {
' Age ': 19,
' Sex ': ' Woman ',
' Addr ': ' Changping District ',
' Money ': 10000000,
"Bag": {
' LV ': ' A car ',
' Crocodile ': 10
}
},
}
# Print (stus[' TLX ' [' money '])
# Print (stus[' MPP ' [' Bag '].keys ())
#
# All_money = stus[' YBQ ' [' Jinku '].values ()
# # print (All_money)
# # print (sum (All_money))
# Sum_money = 0
# for money in All_money:
# Sum_money = Sum_money + Money
# Print (Sum_money)

#print (stus[' TLX ' [' Huazhuangpin '][1])



# All_money = stus[' YBQ ' [' Jinku '].values ()
# #print (sum (All_money))
# Sum_money = 0
# for money in All_money:
# Sum_money=sum_money +money
#
# Print (Sum_money)
Print (stus[' TLX ' [' Huazhuangpin '][1])

Day3-python Study Notes (iii)