python csv dict reader

1import csv
2
3with open('names.csv', 'w') as csvfile:
4    fieldnames = ['first_name', 'last_name']
5    writer = csv.DictWriter(csvfile, fieldnames=fieldnames)
6
7    writer.writeheader()
8    writer.writerow({'first_name': 'Baked', 'last_name': 'Beans'})
9    writer.writerow({'first_name': 'Lovely', 'last_name': 'Spam'})
10    writer.writerow({'first_name': 'Wonderful', 'last_name': 'Spam'})
11

1>>> import csv
2>>> with open('names.csv', newline='') as csvfile:
3...     reader = csv.DictReader(csvfile)
4...     for row in reader:
5...         print(row['first_name'], row['last_name'])
6...
7Eric Idle
8John Cleese
9
10>>> print(row)
11{'first_name': 'John', 'last_name': 'Cleese'}
12

1with open(r'c:\dl\FrameRecentSessions.csv') as csv_file:
2    csv_reader = csv.reader(csv_file, delimiter=',')
3    line_count = 0
4    for row in csv_reader:
5        if line_count == 0:
6            print(f'Column names are {", ".join(row)}')
7            line_count += 1
8        else:
9            print(f'\t{row[0]} works in the {row[1]} department, and was born in {row[2]}.')
10            line_count += 1
11    print(f'Processed {line_count} lines.')

1import csv
2
3with open('names.csv', 'w') as csvfile:
4    fieldnames = ['first_name', 'last_name']
5    writer = csv.DictWriter(csvfile, fieldnames=fieldnames)
6
7    writer.writeheader()
8    writer.writerow({'first_name': 'Baked', 'last_name': 'Beans'})
9    writer.writerow({'first_name': 'Lovely', 'last_name': 'Spam'})
10    writer.writerow({'first_name': 'Wonderful', 'last_name': 'Spam'})