如何将结果从一个变量传输到excel中的列？

Question

I want to add the values inside duplicates to column Name so that print(data["Name"]) can return all the values contained by the duplicates . How can I achieve this?

Quick story: I'm importing a csv file and I need to split the column Name to get rid of meaningless information and then I'm using list comprehension to find the duplicates.

data = pd.read_csv(next(iglob('*.csv')))
data["Name"]= data["Name"].str.split("(", n = 1, expand = True) 
duplicates = [x for x in data["Name"]  if x in data["Name"] 
[data["Name"].duplicated()].values]

Answer 1

Edit:

df['dupicates'] = df['Name'].where(df['Name'].duplicated(keep=False), '')

    Name duplicates
0  NameC           
1  NameA      NameA
2  NameB      NameB
3  NameA      NameA
4  NameA      NameA
5  NameB      NameB

Or if you only want to label those duplicate values...(remove keep=False )

df['duplicates'] = df['Name'].where(df['Name'].duplicated(), '')

    Name duplicates
0  NameC           
1  NameA           
2  NameB           
3  NameA      NameA
4  NameA      NameA
5  NameB      NameB

---

IIUC, you can try something like this:

df = pd.DataFrame({'Name':['NameC', 'NameA', 'NameB', 'NameA', 'NameA', 'NameB']})
duplicates = df.loc[df['Name'].duplicated(), 'Name'].unique().tolist()
duplicates

Output:

['NameA', 'NameB']

Explanation: Use duplicates to create a boolean series, then filter the dataframe by the boolean series and column 'Name' then use unique to get the unique values of all the duplicates.