如何遍历2列并一一匹配

Question

假设我有 2 个 excel 个文件，每个文件包含一列名称和日期

Excel 1:

Name
0      Bla bla bla June 04 2018 
1      Puppy Dog June 01 2017
2      Donald Duck February 24 2017
3      Bruno Venus April 24 2019

Excel 2:

                             Name
0        Pluto Feb 09 2019
1        Donald Glover Feb 22 2020
2        Dog Feb 22 2020
3        Bla Bla Feb 22 2020

我想将第 1 列中的每个单元格与第 2 列中的每个单元格进行匹配，然后找到最大的相似度。

以下函数将给出两个输入相互匹配程度的百分比值。

SequenceMatcher 代码示例：

from difflib import SequenceMatcher

def similar(a, b):
    return SequenceMatcher(None, a, b).ratio()


x = "Adam Clausen a Feb 09 2019"
y = "Adam Clausen Feb 08 2019"
print(similar(x,y))

输出：0.92

Answer 1

如果您知道如何将列加载为数据框..这段代码应该可以完成您的工作..

from difflib import SequenceMatcher

col_1 = ['potato','tomato', 'apple']
col_2 = ['tomatoe','potatao','appel']

def similar(a,b):
    ratio = SequenceMatcher(None, a, b).ratio()
    matches = a, b
    return ratio, matches

for i in col_1:
    print(max(similar(i,j) for j in col_2))

Answer 2

UPDATED/SOLVED 部分

下面的代码是这样的：

它获取 2 个输入文件并将它们转换为数据帧
然后它将获取一个特定的列（在本例中它们都称为名称）并将其用作匹配输入
它从文件 1 中取一个名字并贯穿文件 2 中的所有名字
然后它采用匹配度最高的名称并保存它们各自的行，并将它们并排保存在输出文件中

代码：

import pandas as pd
import numpy as np
from difflib import SequenceMatcher

def similar(a, b):
    ratio = SequenceMatcher(None, a, b).ratio()
    return ratio

#Load Batchlog to Data frame

data1 = pd.read_excel (r'File1.xlsx')
data2 = pd.read_excel (r'File2.xlsx')

df1 = pd.DataFrame(data1)
df2 = pd.DataFrame(data2)

df1['Name'] = df1['Name'].astype(str)
df2['Name'] = df2['Name'].astype(str)

#Function/LOOP
order = []
for index, row in df1.iterrows():
    maxima = [similar(row['Name'], j) for j in df2['Name']]

#best_Ratio=Best Match
    best_ratio = max(maxima)
    best_row = np.argmax(maxima)

#Rearrange new order and save in Output File
    order.append(best_row)

df2 = df2.iloc[order].reset_index()

pd.concat([df1, df2], axis=1)

dfFinal=pd.concat([df1, df2], axis=1)

dfFinal.to_excel("OUTPUT.xlsx")  
#Thank you for the help!

如何遍历2列并一一匹配

How to iterate through 2 columns and match one by one

python

loops

dataframe

sequencematcher

pandas