how to get protein sequence biopython

Question

[Xylanaser]

hey what's wrong with my script :(?

from Bio import Entrez
Entrez.email = '<censored>'
import time

def fetch(ID):
    handle = Entrez.efetch(db = 'Protein', id = ID, retmode = 'fasta', rettype = 'text')
    seq = handle.read()
    time.sleep(1)
    return seq
ids = ['ATK1','Cat','Lig1']
out = [fetch(id) for id in ids] 
with open('out.fasta', 'w') as f:
    f.writelines(out)

[st.ph.n]

hey what's the error you're getting?

[Xylanaser]

HTTPError: Bad Request

[WouterDeCoster]

This?

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/wdecoster/anaconda3/lib/python3.5/site-packages/Bio/Entrez/__init__.py", line 180, in efetch
    return _open(cgi, variables, post=post)
  File "/home/wdecoster/anaconda3/lib/python3.5/site-packages/Bio/Entrez/__init__.py", line 526, in _open
    raise exception
  File "/home/wdecoster/anaconda3/lib/python3.5/site-packages/Bio/Entrez/__init__.py", line 524, in _open
    handle = _urlopen(cgi)
  File "/home/wdecoster/anaconda3/lib/python3.5/urllib/request.py", line 163, in urlopen
    return opener.open(url, data, timeout)
  File "/home/wdecoster/anaconda3/lib/python3.5/urllib/request.py", line 472, in open
    response = meth(req, response)
  File "/home/wdecoster/anaconda3/lib/python3.5/urllib/request.py", line 582, in http_response
    'http', request, response, code, msg, hdrs)
  File "/home/wdecoster/anaconda3/lib/python3.5/urllib/request.py", line 510, in error
    return self._call_chain(*args)
  File "/home/wdecoster/anaconda3/lib/python3.5/urllib/request.py", line 444, in _call_chain
    result = func(*args)
  File "/home/wdecoster/anaconda3/lib/python3.5/urllib/request.py", line 590, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 400: Bad Request

[Xylanaser]

File "<ipython-input-42-0be173f176eb>", line 1, in <module>
    runfile('C:/Users/MGrad/Dropbox/Leg/bioPythonSearch.py', wdir='C:/Users/MGrad/Dropbox/Leg')

  File "C:\Users\MGrad\AppData\Local\conda\conda\envs\my_root\lib\site-packages\spyder\utils\site\sitecustomize.py", line 880, in runfile
    execfile(filename, namespace)

  File "C:\Users\MGrad\AppData\Local\conda\conda\envs\my_root\lib\site-packages\spyder\utils\site\sitecustomize.py", line 102, in execfile
    exec(compile(f.read(), filename, 'exec'), namespace)

  File "C:/Users/MGrad/Dropbox/Leg/bioPythonSearch.py", line 20, in <module>
    out = [fetch(id) for id in ids] # where ids is a Python list containing gene ids/accession numbers

  File "C:/Users/MGrad/Dropbox/Leg/bioPythonSearch.py", line 20, in <listcomp>
    out = [fetch(id) for id in ids] # where ids is a Python list containing gene ids/accession numbers

  File "C:/Users/MGrad/Dropbox/Leg/bioPythonSearch.py", line 14, in fetch
    handle = Entrez.efetch(db = 'Protein', id = ID, retmode = 'fasta', rettype = 'text')

  File "C:\Users\MGrad\AppData\Local\conda\conda\envs\my_root\lib\site-packages\Bio\Entrez\__init__.py", line 180, in efetch
    return _open(cgi, variables, post=post)

  File "C:\Users\MGrad\AppData\Local\conda\conda\envs\my_root\lib\site-packages\Bio\Entrez\__init__.py", line 526, in _open
    raise exception

  File "C:\Users\MGrad\AppData\Local\conda\conda\envs\my_root\lib\site-packages\Bio\Entrez\__init__.py", line 524, in _open
    handle = _urlopen(cgi)

  File "C:\Users\MGrad\AppData\Local\conda\conda\envs\my_root\lib\urllib\request.py", line 223, in urlopen
    return opener.open(url, data, timeout)

  File "C:\Users\MGrad\AppData\Local\conda\conda\envs\my_root\lib\urllib\request.py", line 532, in open
    response = meth(req, response)

  File "C:\Users\MGrad\AppData\Local\conda\conda\envs\my_root\lib\urllib\request.py", line 642, in http_response
    'http', request, response, code, msg, hdrs)

  File "C:\Users\MGrad\AppData\Local\conda\conda\envs\my_root\lib\urllib\request.py", line 570, in error
    return self._call_chain(*args)

  File "C:\Users\MGrad\AppData\Local\conda\conda\envs\my_root\lib\urllib\request.py", line 504, in _call_chain
    result = func(*args)

  File "C:\Users\MGrad\AppData\Local\conda\conda\envs\my_root\lib\urllib\request.py", line 650, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)

HTTPError: Bad Request

[WouterDeCoster]

See also this thread

[WouterDeCoster]

FYI, I censored your email address.