Cannot load pickled object

The problem I am having is when I try to load the pickled object. I have tried using both pickle.loads and pickle.load Here are the results:

pickle.loads - TypeError: 'str' does not support the buffer interface

pickle.load - TypeError: file must have 'read' and 'readline' attributes

Can someone please tell me what I am doing wrong in this process? Thanks, and here is my code:

elif str(parser) == 'SwissWithdrawn_Parser':

       # swissprot name changes

       print('Gathering SwissProt update info...')

       cache_hits = 0

       cache_misses = 0

       files = set()



       for f in os.listdir('out/cache/'):

           if os.path.isfile('out/cache/'+f):

               files.add(f)



       for name in sp_lost_names:



           cached = False

           url = 'http://www.uniprot.org/uniprot/?query=mnemonic%3a'+name+ 

               '+active%3ayes&format=tab&columns=entry%20name'

           hashed_url = str(hash(url))



           ################### For Testing Only - use cache ##################

           if hashed_url in files:

               cached = True

               cache_hits += 1

               content = pickle.loads('out/cache/' +hashed_url)  # <-- problematic line

           else:

               cache_misses += 1

               content = urllib.request.urlopen(url)



           # get the contents returned from the HTTPResponse object

           content_list = [x.decode().strip() for x in content.readlines()]

           if not cached:

               with open('out/cache/'+hashed_url, 'wb') as fp:

                   pickle.dump(content_list, fp)

           ####################################################################



           # no replacement

           if len(content_list) is 0:

               change_log['swiss-names'] = 

                  { name : 'withdrawn' }

           # get the new name

           else:

               new_name = content_list[1]

               change_log['swiss-names'] =

                  { name : new_name }

edited Aug 15 '13 at 21:13

Martijn Pieters♦

702k13224392274

asked Aug 15 '13 at 21:09

Houdini

1,06342041

add a comment |

The problem I am having is when I try to load the pickled object. I have tried using both pickle.loads and pickle.load Here are the results:

pickle.loads - TypeError: 'str' does not support the buffer interface

pickle.load - TypeError: file must have 'read' and 'readline' attributes

Can someone please tell me what I am doing wrong in this process? Thanks, and here is my code:

elif str(parser) == 'SwissWithdrawn_Parser':

       # swissprot name changes

       print('Gathering SwissProt update info...')

       cache_hits = 0

       cache_misses = 0

       files = set()



       for f in os.listdir('out/cache/'):

           if os.path.isfile('out/cache/'+f):

               files.add(f)



       for name in sp_lost_names:



           cached = False

           url = 'http://www.uniprot.org/uniprot/?query=mnemonic%3a'+name+ 

               '+active%3ayes&format=tab&columns=entry%20name'

           hashed_url = str(hash(url))



           ################### For Testing Only - use cache ##################

           if hashed_url in files:

               cached = True

               cache_hits += 1

               content = pickle.loads('out/cache/' +hashed_url)  # <-- problematic line

           else:

               cache_misses += 1

               content = urllib.request.urlopen(url)



           # get the contents returned from the HTTPResponse object

           content_list = [x.decode().strip() for x in content.readlines()]

           if not cached:

               with open('out/cache/'+hashed_url, 'wb') as fp:

                   pickle.dump(content_list, fp)

           ####################################################################



           # no replacement

           if len(content_list) is 0:

               change_log['swiss-names'] = 

                  { name : 'withdrawn' }

           # get the new name

           else:

               new_name = content_list[1]

               change_log['swiss-names'] =

                  { name : new_name }

edited Aug 15 '13 at 21:13

Martijn Pieters♦

702k13224392274

asked Aug 15 '13 at 21:09

Houdini

1,06342041

add a comment |

The problem I am having is when I try to load the pickled object. I have tried using both pickle.loads and pickle.load Here are the results:

pickle.loads - TypeError: 'str' does not support the buffer interface

pickle.load - TypeError: file must have 'read' and 'readline' attributes

Can someone please tell me what I am doing wrong in this process? Thanks, and here is my code:

elif str(parser) == 'SwissWithdrawn_Parser':

       # swissprot name changes

       print('Gathering SwissProt update info...')

       cache_hits = 0

       cache_misses = 0

       files = set()



       for f in os.listdir('out/cache/'):

           if os.path.isfile('out/cache/'+f):

               files.add(f)



       for name in sp_lost_names:



           cached = False

           url = 'http://www.uniprot.org/uniprot/?query=mnemonic%3a'+name+ 

               '+active%3ayes&format=tab&columns=entry%20name'

           hashed_url = str(hash(url))



           ################### For Testing Only - use cache ##################

           if hashed_url in files:

               cached = True

               cache_hits += 1

               content = pickle.loads('out/cache/' +hashed_url)  # <-- problematic line

           else:

               cache_misses += 1

               content = urllib.request.urlopen(url)



           # get the contents returned from the HTTPResponse object

           content_list = [x.decode().strip() for x in content.readlines()]

           if not cached:

               with open('out/cache/'+hashed_url, 'wb') as fp:

                   pickle.dump(content_list, fp)

           ####################################################################



           # no replacement

           if len(content_list) is 0:

               change_log['swiss-names'] = 

                  { name : 'withdrawn' }

           # get the new name

           else:

               new_name = content_list[1]

               change_log['swiss-names'] =

                  { name : new_name }

edited Aug 15 '13 at 21:13

Martijn Pieters♦

702k13224392274

asked Aug 15 '13 at 21:09

Houdini

1,06342041

The problem I am having is when I try to load the pickled object. I have tried using both pickle.loads and pickle.load Here are the results:

pickle.loads - TypeError: 'str' does not support the buffer interface

pickle.load - TypeError: file must have 'read' and 'readline' attributes

Can someone please tell me what I am doing wrong in this process? Thanks, and here is my code:

elif str(parser) == 'SwissWithdrawn_Parser':

       # swissprot name changes

       print('Gathering SwissProt update info...')

       cache_hits = 0

       cache_misses = 0

       files = set()



       for f in os.listdir('out/cache/'):

           if os.path.isfile('out/cache/'+f):

               files.add(f)



       for name in sp_lost_names:



           cached = False

           url = 'http://www.uniprot.org/uniprot/?query=mnemonic%3a'+name+ 

               '+active%3ayes&format=tab&columns=entry%20name'

           hashed_url = str(hash(url))



           ################### For Testing Only - use cache ##################

           if hashed_url in files:

               cached = True

               cache_hits += 1

               content = pickle.loads('out/cache/' +hashed_url)  # <-- problematic line

           else:

               cache_misses += 1

               content = urllib.request.urlopen(url)



           # get the contents returned from the HTTPResponse object

           content_list = [x.decode().strip() for x in content.readlines()]

           if not cached:

               with open('out/cache/'+hashed_url, 'wb') as fp:

                   pickle.dump(content_list, fp)

           ####################################################################



           # no replacement

           if len(content_list) is 0:

               change_log['swiss-names'] = 

                  { name : 'withdrawn' }

           # get the new name

           else:

               new_name = content_list[1]

               change_log['swiss-names'] =

                  { name : new_name }

python python-3.x pickle

edited Aug 15 '13 at 21:13

Martijn Pieters♦

702k13224392274

asked Aug 15 '13 at 21:09

Houdini

1,06342041

edited Aug 15 '13 at 21:13

Martijn Pieters♦

702k13224392274

asked Aug 15 '13 at 21:09

Houdini

1,06342041

edited Aug 15 '13 at 21:13

Martijn Pieters♦

702k13224392274

edited Aug 15 '13 at 21:13

Martijn Pieters♦

702k13224392274

edited Aug 15 '13 at 21:13

Martijn Pieters♦

702k13224392274

asked Aug 15 '13 at 21:09

Houdini

1,06342041

asked Aug 15 '13 at 21:09

Houdini

1,06342041

asked Aug 15 '13 at 21:09

Houdini

1,06342041

add a comment |

1 Answer
1

active

oldest

votes

You need to either read the file first (as binary bytes) and use pickle.loads(), or pass an open file object to the pickle.load() command. The latter is preferable:

with open('out/cache/' +hashed_url, 'rb') as pickle_file:

    content = pickle.load(pickle_file)

Neither method supports loading a pickle from a filename.

edited Sep 12 '16 at 7:55

answered Aug 15 '13 at 21:13

Martijn Pieters♦

702k13224392274

Thank you, thanks to your answer I was able to finally get my first implementation of a cache working! :)

– Houdini
Aug 15 '13 at 21:33

add a comment |

Your Answer

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

You need to either read the file first (as binary bytes) and use pickle.loads(), or pass an open file object to the pickle.load() command. The latter is preferable:

with open('out/cache/' +hashed_url, 'rb') as pickle_file:

    content = pickle.load(pickle_file)

Neither method supports loading a pickle from a filename.

edited Sep 12 '16 at 7:55

answered Aug 15 '13 at 21:13

Martijn Pieters♦

702k13224392274

Thank you, thanks to your answer I was able to finally get my first implementation of a cache working! :)

– Houdini
Aug 15 '13 at 21:33

add a comment |

You need to either read the file first (as binary bytes) and use pickle.loads(), or pass an open file object to the pickle.load() command. The latter is preferable:

with open('out/cache/' +hashed_url, 'rb') as pickle_file:

    content = pickle.load(pickle_file)

Neither method supports loading a pickle from a filename.

edited Sep 12 '16 at 7:55

answered Aug 15 '13 at 21:13

Martijn Pieters♦

702k13224392274

Thank you, thanks to your answer I was able to finally get my first implementation of a cache working! :)

– Houdini
Aug 15 '13 at 21:33

add a comment |

You need to either read the file first (as binary bytes) and use pickle.loads(), or pass an open file object to the pickle.load() command. The latter is preferable:

with open('out/cache/' +hashed_url, 'rb') as pickle_file:

    content = pickle.load(pickle_file)

Neither method supports loading a pickle from a filename.

edited Sep 12 '16 at 7:55

answered Aug 15 '13 at 21:13

Martijn Pieters♦

702k13224392274

You need to either read the file first (as binary bytes) and use pickle.loads(), or pass an open file object to the pickle.load() command. The latter is preferable:

with open('out/cache/' +hashed_url, 'rb') as pickle_file:

    content = pickle.load(pickle_file)

Neither method supports loading a pickle from a filename.

edited Sep 12 '16 at 7:55

answered Aug 15 '13 at 21:13

Martijn Pieters♦

702k13224392274

edited Sep 12 '16 at 7:55

answered Aug 15 '13 at 21:13

Martijn Pieters♦

702k13224392274

answered Aug 15 '13 at 21:13

Martijn Pieters♦

702k13224392274

answered Aug 15 '13 at 21:13

Martijn Pieters♦

702k13224392274

Thank you, thanks to your answer I was able to finally get my first implementation of a cache working! :)

– Houdini
Aug 15 '13 at 21:33

add a comment |

Thank you, thanks to your answer I was able to finally get my first implementation of a cache working! :)

– Houdini
Aug 15 '13 at 21:33

Thank you, thanks to your answer I was able to finally get my first implementation of a cache working! :)

– Houdini
Aug 15 '13 at 21:33

add a comment |

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