ValueError : I/O operation on closed file

up vote
59
down vote

favorite

import csv    



with open('v.csv', 'w') as csvfile:

     cwriter = csv.writer(csvfile, delimiter=' ', quotechar='|', quoting=csv.QUOTE_MINIMAL)



for w, c in p.iteritems():

    cwriter.writerow(w + c)

Here, p is a dictionary, w and c both are strings.

When I try to write in the file it reports error:

ValueError : I/O operation on closed file.

Help me, I'm really new to python. I'm working with Python 2.7.3
Thank you in advance.

edited May 23 '17 at 12:17

Ciro Santilli 新疆改造中心六四事件法轮功

130k27509439

asked Sep 23 '13 at 6:08

GobSmack

68731227

add a comment |

up vote
59
down vote

favorite

import csv    



with open('v.csv', 'w') as csvfile:

     cwriter = csv.writer(csvfile, delimiter=' ', quotechar='|', quoting=csv.QUOTE_MINIMAL)



for w, c in p.iteritems():

    cwriter.writerow(w + c)

Here, p is a dictionary, w and c both are strings.

When I try to write in the file it reports error:

ValueError : I/O operation on closed file.

Help me, I'm really new to python. I'm working with Python 2.7.3
Thank you in advance.

edited May 23 '17 at 12:17

Ciro Santilli 新疆改造中心六四事件法轮功

130k27509439

asked Sep 23 '13 at 6:08

GobSmack

68731227

add a comment |

up vote
59
down vote

favorite

import csv    



with open('v.csv', 'w') as csvfile:

     cwriter = csv.writer(csvfile, delimiter=' ', quotechar='|', quoting=csv.QUOTE_MINIMAL)



for w, c in p.iteritems():

    cwriter.writerow(w + c)

Here, p is a dictionary, w and c both are strings.

When I try to write in the file it reports error:

ValueError : I/O operation on closed file.

Help me, I'm really new to python. I'm working with Python 2.7.3
Thank you in advance.

edited May 23 '17 at 12:17

Ciro Santilli 新疆改造中心六四事件法轮功

130k27509439

asked Sep 23 '13 at 6:08

GobSmack

68731227

import csv    



with open('v.csv', 'w') as csvfile:

     cwriter = csv.writer(csvfile, delimiter=' ', quotechar='|', quoting=csv.QUOTE_MINIMAL)



for w, c in p.iteritems():

    cwriter.writerow(w + c)

Here, p is a dictionary, w and c both are strings.

When I try to write in the file it reports error:

ValueError : I/O operation on closed file.

Help me, I'm really new to python. I'm working with Python 2.7.3
Thank you in advance.

python csv file-io io

edited May 23 '17 at 12:17

Ciro Santilli 新疆改造中心六四事件法轮功

130k27509439

asked Sep 23 '13 at 6:08

GobSmack

68731227

edited May 23 '17 at 12:17

Ciro Santilli 新疆改造中心六四事件法轮功

130k27509439

asked Sep 23 '13 at 6:08

GobSmack

68731227

edited May 23 '17 at 12:17

Ciro Santilli 新疆改造中心六四事件法轮功

130k27509439

edited May 23 '17 at 12:17

Ciro Santilli 新疆改造中心六四事件法轮功

130k27509439

edited May 23 '17 at 12:17

Ciro Santilli 新疆改造中心六四事件法轮功

130k27509439

asked Sep 23 '13 at 6:08

GobSmack

68731227

asked Sep 23 '13 at 6:08

GobSmack

68731227

asked Sep 23 '13 at 6:08

GobSmack

68731227

add a comment |

2 Answers
2

active

oldest

votes

up vote
94
down vote

accepted

Indent correctly; for statement should be inside with block:

import csv    



with open('v.csv', 'w') as csvfile:

    cwriter = csv.writer(csvfile, delimiter=' ', quotechar='|', quoting=csv.QUOTE_MINIMAL)



    for w, c in p.iteritems():

        cwriter.writerow(w + c)

Outside the with block, the file is closed.

>>> with open('/tmp/1', 'w') as f:

...     print f.closed

... 

False

>>> print f.closed

True

answered Sep 23 '13 at 6:09

falsetru

240k31414416

Thanks! You saved me hours of waste efforts :)
– Learner23
Jul 14 '15 at 5:38

Can't believe that this error was looked up so many times!!
– user1767754
Dec 17 '17 at 22:59

@user1767754, I faced this error: after doing a copy/paste of a code coming from Stackoverflow.com. Spaces & Tabs were mixed
– Slake
Mar 26 at 21:31

add a comment |

up vote
2
down vote

Same error can raise by mixing: tabs + spaces.

with open('/foo', 'w') as f:

 (spaces OR  tab) print f       <-- success

 (spaces AND tab) print f       <-- fail

answered Mar 26 at 21:43

Slake

1,29621724

True, but this is always the case in python when mixing them up right?
– Nebulosar
Apr 20 at 9:24

add a comment |

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

up vote
94
down vote

accepted

Indent correctly; for statement should be inside with block:

import csv    



with open('v.csv', 'w') as csvfile:

    cwriter = csv.writer(csvfile, delimiter=' ', quotechar='|', quoting=csv.QUOTE_MINIMAL)



    for w, c in p.iteritems():

        cwriter.writerow(w + c)

Outside the with block, the file is closed.

>>> with open('/tmp/1', 'w') as f:

...     print f.closed

... 

False

>>> print f.closed

True

answered Sep 23 '13 at 6:09

falsetru

240k31414416

Thanks! You saved me hours of waste efforts :)
– Learner23
Jul 14 '15 at 5:38

Can't believe that this error was looked up so many times!!
– user1767754
Dec 17 '17 at 22:59

@user1767754, I faced this error: after doing a copy/paste of a code coming from Stackoverflow.com. Spaces & Tabs were mixed
– Slake
Mar 26 at 21:31

add a comment |

up vote
94
down vote

accepted

Indent correctly; for statement should be inside with block:

import csv    



with open('v.csv', 'w') as csvfile:

    cwriter = csv.writer(csvfile, delimiter=' ', quotechar='|', quoting=csv.QUOTE_MINIMAL)



    for w, c in p.iteritems():

        cwriter.writerow(w + c)

Outside the with block, the file is closed.

>>> with open('/tmp/1', 'w') as f:

...     print f.closed

... 

False

>>> print f.closed

True

answered Sep 23 '13 at 6:09

falsetru

240k31414416

Thanks! You saved me hours of waste efforts :)
– Learner23
Jul 14 '15 at 5:38

Can't believe that this error was looked up so many times!!
– user1767754
Dec 17 '17 at 22:59

@user1767754, I faced this error: after doing a copy/paste of a code coming from Stackoverflow.com. Spaces & Tabs were mixed
– Slake
Mar 26 at 21:31

add a comment |

up vote
94
down vote

accepted

Indent correctly; for statement should be inside with block:

import csv    



with open('v.csv', 'w') as csvfile:

    cwriter = csv.writer(csvfile, delimiter=' ', quotechar='|', quoting=csv.QUOTE_MINIMAL)



    for w, c in p.iteritems():

        cwriter.writerow(w + c)

Outside the with block, the file is closed.

>>> with open('/tmp/1', 'w') as f:

...     print f.closed

... 

False

>>> print f.closed

True

answered Sep 23 '13 at 6:09

falsetru

240k31414416

Indent correctly; for statement should be inside with block:

import csv    



with open('v.csv', 'w') as csvfile:

    cwriter = csv.writer(csvfile, delimiter=' ', quotechar='|', quoting=csv.QUOTE_MINIMAL)



    for w, c in p.iteritems():

        cwriter.writerow(w + c)

Outside the with block, the file is closed.

>>> with open('/tmp/1', 'w') as f:

...     print f.closed

... 

False

>>> print f.closed

True

answered Sep 23 '13 at 6:09

falsetru

240k31414416

answered Sep 23 '13 at 6:09

falsetru

240k31414416

answered Sep 23 '13 at 6:09

falsetru

240k31414416

answered Sep 23 '13 at 6:09

falsetru

240k31414416

Thanks! You saved me hours of waste efforts :)
– Learner23
Jul 14 '15 at 5:38

Can't believe that this error was looked up so many times!!
– user1767754
Dec 17 '17 at 22:59

@user1767754, I faced this error: after doing a copy/paste of a code coming from Stackoverflow.com. Spaces & Tabs were mixed
– Slake
Mar 26 at 21:31

add a comment |

Thanks! You saved me hours of waste efforts :)
– Learner23
Jul 14 '15 at 5:38

Can't believe that this error was looked up so many times!!
– user1767754
Dec 17 '17 at 22:59

@user1767754, I faced this error: after doing a copy/paste of a code coming from Stackoverflow.com. Spaces & Tabs were mixed
– Slake
Mar 26 at 21:31

Thanks! You saved me hours of waste efforts :)
– Learner23
Jul 14 '15 at 5:38

Can't believe that this error was looked up so many times!!
– user1767754
Dec 17 '17 at 22:59

@user1767754, I faced this error: after doing a copy/paste of a code coming from Stackoverflow.com. Spaces & Tabs were mixed
– Slake
Mar 26 at 21:31

add a comment |

up vote
2
down vote

Same error can raise by mixing: tabs + spaces.

with open('/foo', 'w') as f:

 (spaces OR  tab) print f       <-- success

 (spaces AND tab) print f       <-- fail

answered Mar 26 at 21:43

Slake

1,29621724

True, but this is always the case in python when mixing them up right?
– Nebulosar
Apr 20 at 9:24

add a comment |

up vote
2
down vote

Same error can raise by mixing: tabs + spaces.

with open('/foo', 'w') as f:

 (spaces OR  tab) print f       <-- success

 (spaces AND tab) print f       <-- fail

answered Mar 26 at 21:43

Slake

1,29621724

True, but this is always the case in python when mixing them up right?
– Nebulosar
Apr 20 at 9:24

add a comment |

up vote
2
down vote

Same error can raise by mixing: tabs + spaces.

with open('/foo', 'w') as f:

 (spaces OR  tab) print f       <-- success

 (spaces AND tab) print f       <-- fail

answered Mar 26 at 21:43

Slake

1,29621724

Same error can raise by mixing: tabs + spaces.

with open('/foo', 'w') as f:

 (spaces OR  tab) print f       <-- success

 (spaces AND tab) print f       <-- fail

answered Mar 26 at 21:43

Slake

1,29621724

answered Mar 26 at 21:43

Slake

1,29621724

answered Mar 26 at 21:43

Slake

1,29621724

answered Mar 26 at 21:43

Slake

1,29621724

True, but this is always the case in python when mixing them up right?
– Nebulosar
Apr 20 at 9:24

add a comment |

True, but this is always the case in python when mixing them up right?
– Nebulosar
Apr 20 at 9:24

True, but this is always the case in python when mixing them up right?
– Nebulosar
Apr 20 at 9:24

add a comment |

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