我想查找一个DataFrame列与另一个数据框架中的列比较时，是否有子字符串存在。
在我的例子中 DF2['Column y'] 我想
'manager' 与...对抗 'Software Developer Manager' 和 'executive' 与...对抗 'Online Bidding Executive' 诸如此类DF1:
unique_values counts Rank Stop_Word
0 manager 9322 1.0 False
1 for 8463 2.0 True
2 developer 7323 3.0 False
3 executive 5864 4.0 False
4 engineer 5669 5.0 False
5 sales 4492 6.0 False
DF2:
ColumnX. Column y.
0 Digital Media Planner. Nan.
1 Online Bidding Executive. Executive
2 Software Developer Manager Manager
3 Technical Support. Nan
4 Software Test Engineer -hyderabad. engineer
5 Opening For Adobe Analytics Specialist. Nan
6 Sales- Fresher-for Leading Property Consultant. Nan
7 Opportunity For Azure Devops Architect Nan
8 BDE. Nan
9 Technical Support/ Product Support. Nan
* 我想 DF2['Column y'] 输出
另外，如果有多个子字符串存在，那么必须考虑排名最小的那个，就像在第2个索引值中的 DF2 : 'manager' 审议过 'developer'.
我会使用apply；apply基本上只是一个映射，它将一个方法应用到每一行或每一列。输出可以放到自己的列中，如图所示。
建立数据框架......
import pandas as pd
import re
df1 = {'unique_values': ['manager', 'for', 'developer', 'executive', 'engineer', 'sales'],
'counts': [9322, 8463, 7323, 5864, 5669, 4492],
'Rank': [1.0, 2.0, 3.0, 4.0, 5.0, 6.0],
'Stop_word': [False, True, False, False, False, False]}
df1 = pd.DataFrame.from_dict(df1)
df2 = {'X': ['Digital Media Planner',
'Online Bidding Executive',
'Software Developer Manager',
'Technical Support',
'Software Test Engineer -hyderabad.Software Test Engineer -hyderabad',
'Opening For Adobe Analytics Specialist.',
'Sales- Fresher-for Leading Property Consultant.',
'Opportunity For Azure Devops Architect',
'BDE',
'Technical Support/ Product Support.']}
df2 = pd.DataFrame.from_dict(df2)
解决方案...
def method(df1, df2_value):
num_values = len(df1)
for row_index in range(num_values):
row = df1.iloc[[row_index]]
df1_value = row.iloc[0,0]
stop_word = row.iloc[0,3]
if bool(re.search(df1_value, df2_value, re.IGNORECASE)):
if stop_word:
return None
else:
return df1_value
df2['Y'] = df2.apply(lambda row: method(df1, row.iloc[0]), axis=1)
print(df2)
输出。
X Y
0 Digital Media Planner None
1 Online Bidding Executive executive
2 Software Developer Manager manager
3 Technical Support None
4 Software Test Engineer -hyderabad.Software Tes... engineer
5 Opening For Adobe Analytics Specialist. None
6 Sales- Fresher-for Leading Property Consultant. None
7 Opportunity For Azure Devops Architect None
8 BDE None
9 Technical Support/ Product Support. None