Error while concatenating values from a dataframe in python-CodePudding

I am reading a csv file using python and displaying the record after asking the user to select an index and then I display all the records corresponding to the index number.

Code:

df = pd.read_csv(csv_filepath, usecols=['userID', 'firstName', 'lastName'])
select_index = int(input("Enter the Index of Claimant: "))
data = df.loc[select_index, :]
print(data)

userID = data.userID
firstName = data.firstName
lastName = data.lastName
print(claimantID)
print(Claimant_FirstName)
print(Claimant_LastName)

The above code works perfectly fine and I am able to print the values. Now I want to create a variable called as x and store userID firstName lastName .

If I do this I am getting error. What can be the issue. Basically if I write

x = userID   firstName   lastName

I get the following error:

numpy.core._exceptions.UFuncTypeError: ufunc 'add' did not contain a loop with signature matching types (dtype('int64'), dtype('<U4')) -> None

CodePudding user response：

The problem is with coloumn types.

Example:

import pandas as pd
df = pd.DataFrame({'userID': [1], 'firstName': ['a'], 'lastName':['b']})
data = df.loc[0, :]
userID = data.userID
firstName = data.firstName
lastName = data.lastName
#solution

x = str(userID)   firstName   lastName

result: