CSV new-line character seen in unquoted field error
PythonDjangoCsvPython Problem Overview
the following code worked until today when I imported from a Windows machine and got this error:
new-line character seen in unquoted field - do you need to open the file in universal-newline mode?
import csv
class CSV:
def __init__(self, file=None):
self.file = file
def read_file(self):
data = []
file_read = csv.reader(self.file)
for row in file_read:
data.append(row)
return data
def get_row_count(self):
return len(self.read_file())
def get_column_count(self):
new_data = self.read_file()
return len(new_data[0])
def get_data(self, rows=1):
data = self.read_file()
return data[:rows]
How can I fix this issue?
def upload_configurator(request, id=None):
"""
A view that allows the user to configurator the uploaded CSV.
"""
upload = Upload.objects.get(id=id)
csvobject = CSV(upload.filepath)
upload.num_records = csvobject.get_row_count()
upload.num_columns = csvobject.get_column_count()
upload.save()
form = ConfiguratorForm()
row_count = csvobject.get_row_count()
colum_count = csvobject.get_column_count()
first_row = csvobject.get_data(rows=1)
first_two_rows = csvobject.get_data(rows=5)
Python Solutions
Solution 1 - Python
It'll be good to see the csv file itself, but this might work for you, give it a try, replace:
file_read = csv.reader(self.file)
with:
file_read = csv.reader(self.file, dialect=csv.excel_tab)
Or, open a file with universal newline mode
and pass it to csv.reader
, like:
reader = csv.reader(open(self.file, 'rU'), dialect=csv.excel_tab)
Or, use splitlines()
, like this:
def read_file(self):
with open(self.file, 'r') as f:
data = [row for row in csv.reader(f.read().splitlines())]
return data
Solution 2 - Python
I realize this is an old post, but I ran into the same problem and don't see the correct answer so I will give it a try
Python Error:
_csv.Error: new-line character seen in unquoted field
Caused by trying to read Macintosh (pre OS X formatted) CSV files. These are text files that use CR for end of line. If using MS Office make sure you select either plain CSV format or CSV (MS-DOS). Do not use CSV (Macintosh) as save-as type.
My preferred EOL version would be LF (Unix/Linux/Apple), but I don't think MS Office provides the option to save in this format.
Solution 3 - Python
For Mac OS X, save your CSV file in "Windows Comma Separated (.csv)" format.
Solution 4 - Python
If this happens to you on mac (as it did to me):
-
Save the file as
CSV (MS-DOS Comma-Separated)
-
Run the following script
with open(csv_filename, 'rU') as csvfile: csvreader = csv.reader(csvfile) for row in csvreader: print ', '.join(row)
Solution 5 - Python
Try to run dos2unix
on your windows imported files first
Solution 6 - Python
This is an error that I faced. I had saved .csv file in MAC OSX.
While saving, save it as "Windows Comma Separated Values (.csv)" which resolved the issue.
Solution 7 - Python
This worked for me on OSX.
# allow variable to opened as files
from io import StringIO
# library to map other strange (accented) characters back into UTF-8
from unidecode import unidecode
# cleanse input file with Windows formating to plain UTF-8 string
with open(filename, 'rb') as fID:
uncleansedBytes = fID.read()
# decode the file using the correct encoding scheme
# (probably this old windows one)
uncleansedText = uncleansedBytes.decode('Windows-1252')
# replace carriage-returns with new-lines
cleansedText = uncleansedText.replace('\r', '\n')
# map any other non UTF-8 characters into UTF-8
asciiText = unidecode(cleansedText)
# read each line of the csv file and store as an array of dicts,
# use first line as field names for each dict.
reader = csv.DictReader(StringIO(cleansedText))
for line_entry in reader:
# do something with your read data
Solution 8 - Python
I know this has been answered for quite some time but not solve my problem. I am using DictReader and StringIO for my csv reading due to some other complications. I was able to solve problem more simply by replacing delimiters explicitly:
with urllib.request.urlopen(q) as response:
raw_data = response.read()
encoding = response.info().get_content_charset('utf8')
data = raw_data.decode(encoding)
if '\r\n' not in data:
# proably a windows delimited thing...try to update it
data = data.replace('\r', '\r\n')
Might not be reasonable for enormous CSV files, but worked well for my use case.
Solution 9 - Python
Alternative and fast solution : I faced the same error. I reopened the "wierd" csv file in GNUMERIC on my lubuntu machine and exported the file as csv file. This corrected the issue.