[英]String matching and storing within a dictionary
I'm using pattern matching to collect the postcodes belonging to a street address and storing these addresses as values within a dictionary, here is what I have tried:我正在使用模式匹配来收集属于街道地址的邮政编码,并将这些地址作为值存储在字典中,这是我尝试过的:
test = pd.DataFrame(['SR2', 'SA1', 'M16', 'KY6', 'SR6'], columns=(['postcode']))
street = pd.DataFrame(['UnnamedRoad,LlandeiloSA196UA,UK', '8NewRd,LlandeiloSA196DB,UK','1RomanRd,Banwen,NeathSA109LH,UK', 'UnnamedRoad,LlangadogSA199UN,UK', '48ColeAve,ChadwellStMary,GraysRM164JQ,UK', '37WellingtonRd,NorthWealdBassett,EppingCM166JY,UK'], columns=(['address']))
dictframe = {}
for i in test['postcode']:
dictframe[i] = list()
for k in range(0, len(test), 1):
dictframe[i].append(list(filter(lambda x: test['postcode'][k] in x, street['address'])))
However this prints all the outputs in each key, but I wanted only for where values appear to be within the key otherwise keep the list empty if nothing match.然而,这会打印每个键中的所有输出,但我只想要值出现在键内的位置,否则如果没有匹配项,则将列表留空。 Here's the output I get:
这是我得到的 output:
{'SR2': [[],
['UnnamedRoad,LlandeiloSA196UA,UK',
'8NewRd,LlandeiloSA196DB,UK',
'1RomanRd,Banwen,NeathSA109LH,UK',
'UnnamedRoad,LlangadogSA199UN,UK'],
['48ColeAve,ChadwellStMary,GraysRM164JQ,UK',
'37WellingtonRd,NorthWealdBassett,EppingCM166JY,UK'],
[],
[]],
..
..
..
Expected output:预计 output:
{'SR2': [],
'SA1': ['UnnamedRoad,LlandeiloSA196UA,UK',
'8NewRd,LlandeiloSA196DB,UK',
'1RomanRd,Banwen,NeathSA109LH,UK',
'UnnamedRoad,LlangadogSA199UN,UK']
...
...
}
corrected code - inner for loop is not required & in the string matching the index of test['postcode'] needs to be used, refer Python enumerate更正的代码 -不需要内部 for 循环 & 在匹配索引的字符串中 test['postcode'] 需要使用,参考Python enumerate
import pandas as pd
test = pd.DataFrame(['SR2', 'SA1', 'M16', 'KY6', 'SR6'], columns=(['postcode']))
street = pd.DataFrame(['UnnamedRoad,LlandeiloSA196UA,UK', '8NewRd,LlandeiloSA196DB,UK','1RomanRd,Banwen,NeathSA109LH,UK', 'UnnamedRoad,LlangadogSA199UN,UK', '48ColeAve,ChadwellStMary,GraysRM164JQ,UK', '37WellingtonRd,NorthWealdBassett,EppingCM166JY,UK'], columns=(['address']))
dictframe = {}
for index, i in enumerate(test['postcode']):
dictframe[i] = list()
#for k in range(0, len(street), 1):
dictframe[i].append(list(filter(lambda x: test['postcode'][index] in x, street['address'])))
Output-输出-
{'KY6': [[]],
'M16': [['48ColeAve,ChadwellStMary,GraysRM164JQ,UK',
'37WellingtonRd,NorthWealdBassett,EppingCM166JY,UK']],
'SA1': [['UnnamedRoad,LlandeiloSA196UA,UK',
'8NewRd,LlandeiloSA196DB,UK',
'1RomanRd,Banwen,NeathSA109LH,UK',
'UnnamedRoad,LlangadogSA199UN,UK']],
'SR2': [[]],
'SR6': [[]]}
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