在 Python 3 中写入没有行空间的 CSV 文件

Question

I am trying out the program for writing to a CSV file.

Here's my code:

import csv
#field names
fields = ['Name','Branch','Year']
# data rows of CSV file
rows = [['Stef', 'Multimedia Technology','2'],
    ['Kani', 'Information Technology', '2'],
    ['Plazaa', 'Electronics Engineering', '4'],
     ['Lizzy', 'Computer Science', '4'],
     ['Reshmi', 'Multimedia Technology', '3'],
     ['Geetha','Electrical Engineering', '4'],
     ['Keerti', 'Aeronautical Engineering', '3']]

#writing to csv file
#writing to csv file
with open('records.csv','w') as csvfile:
    #creating  a csv writer object
    csvwriter = csv.writer(csvfile)
    #writing the fields
    csvwriter.writerow(fields)
    # writing the data rows
    csvwriter.writerows(rows)

The program runs well. But in the CSV file, there is a blank newline space (without any entries) between each entry . How to eliminate that line in the resultant CSV file?

Answer 1

Recommended implementation per Python3 Documentation.

with open('records.csv','w', newline='') as csvfile:
    #creating  a csv writer object
    csvwriter = csv.writer(csvfile)
    #writing the fields
    csvwriter.writerow(fields)
    # writing the data rows
    csvwriter.writerows(rows)

https://docs.python.org/3/library/csv.html#csv.writer

Answer 2

Method 1 So when ever i write csv files spaces between lines are created and when reading the files they create problems for me So here is how i solved it

with open("Location.csv","r") as obj:
            reader=csv.reader(obj)
            for lines in reader:
                try:
                    print(lines["Code"])
                    print(lines["Key_num"])
                except TypeError:
                    pass

Method 2 Or even simpler you can use Dictreader works fine without error even if spaces are preset

with open("Location.csv","r") as obj:
              reader=csv.DictReader(obj)
              for lines in reader:
                    print(lines["Code"])