Issue 30937: csv module examples miss newline='' when opening files (original) (raw)

At the very beginning the csv module documentation (https://docs.python.org/3.7/library/csv.html) advises to open files passing newline='' parameter though three examples don't include it:

Here are the examples:

1:

import csv with open('names.csv') as csvfile: ... reader = csv.DictReader(csvfile) ... for row in reader: ... print(row['first_name'], row['last_name']) ... Eric Idle John Cleese

print(row) OrderedDict([('first_name', 'John'), ('last_name', 'Cleese')])

2: import csv

with open('names.csv', 'w') as csvfile: fieldnames = ['first_name', 'last_name'] writer = csv.DictWriter(csvfile, fieldnames=fieldnames)

writer.writeheader()
writer.writerow({'first_name': 'Baked', 'last_name': 'Beans'})
writer.writerow({'first_name': 'Lovely', 'last_name': 'Spam'})
writer.writerow({'first_name': 'Wonderful', 'last_name': 'Spam'})

3: with open('example.csv') as csvfile: dialect = csv.Sniffer().sniff(csvfile.read(1024)) csvfile.seek(0) reader = csv.reader(csvfile, dialect) # ... process CSV file contents here ...