I have 2 pandas dataframe and I want to search through strings in column A of dataframe 1 with the strings in column A of dataframe 2. If there's a match I want to append the corresponding value from dataframe 2 into a new column in dataframe 1, if there is no match I want to append the new value adding the string from column A in dataframe 2 to the bottom of column A in dataframe 1 and include a value of zero in column B.
My df1 looks like:
Column A | Column B
apple | 87
orange | 75
pear | 105
and df2 looks like:
Column A | Column B
apple | 95
orange | 105
pear | 134
banana | 99
Therefore I'd like output df to be:
Column A | Column B | Column C
apple | 87 | 95
orange | 75 | 105
pear | 105 | 134
banana | 0 | 99
I was trying to use a for loop and:
Search_Strings_List = df2['Column A'].tolist()
Value_List = df1['Column B'].tolist()
for search_string in Search_Strings_List:
for value in Value_List
df1['Column C'] = df['Column A'].str.contains('search_string')*value
But that isn't giving me the desired output. Any input would be great