Problem: when running the interface automation script, the requested data is correct, but it keeps reporting error: simplejson.errors Jsondecodeerror: expecting value
reason:
the reason for the error reported by the author here is that this interface returns: response in the non-JSON format
while in the basic interface code, the return is res.json()
Solution:
Modify to return text, or add an exception capture
exception capture
Solution: yum -y install gcc
File "/usr/lib64/python3.6/distutils/dist.py", line 974, in run_command
cmd_obj.run()
File "/usr/lib64/python3.6/distutils/command/build.py", line 135, in run
self.run_command(cmd_name)
File "/usr/lib64/python3.6/distutils/cmd.py", line 313, in run_command
self.distribution.run_command(command)
File "/usr/lib64/python3.6/distutils/dist.py", line 974, in run_command
cmd_obj.run()
File "/tmp/pip-build-ydg0qryh/pycrypto/setup.py", line 251, in run
self.run_command(cmd_name)
File "/usr/lib64/python3.6/distutils/cmd.py", line 313, in run_command
self.distribution.run_command(command)
File "/usr/lib64/python3.6/distutils/dist.py", line 974, in run_command
cmd_obj.run()
File "/tmp/pip-build-ydg0qryh/pycrypto/setup.py", line 278, in run
raise RuntimeError("autoconf error")
RuntimeError: autoconf error
----------------------------------------
Command "/usr/bin/python3.6 -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-ydg0qryh/pycrypto/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-544nn9hj-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-ydg0qryh/pycrypto/
Pdfplumber reports an error when reading PDF table attributeerror: function/symbol ‘arc4_stream_init’ not found in library
Solutions to errors reported
Error reporting item
When using pdfplumber to extract tables in PDF, you will be prompted that arc4 is missing_stream_init。
Traceback (most recent call last):
File "C:\Users\Stan\Python\ALIRT\pdf extracter\test.py", line 50, in <module>
text = convert_pdf_to_txt('test_pdf.pdf')
File "C:\Users\Stan\Python\ALIRT\pdf extracter\test.py", line 40, in convert_pdf_to_txt
for page in PDFPage.get_pages(fp, pagenos, maxpages=maxpages, password=password,caching=caching, check_extractable=True):
File "C:\Users\Stan\anaconda3\lib\site-packages\pdfminer\pdfpage.py", line 127, in get_pages
doc = PDFDocument(parser, password=password, caching=caching)
File "C:\Users\Stan\anaconda3\lib\site-packages\pdfminer\pdfdocument.py", line 564, in __init__
self._initialize_password(password)
File "C:\Users\Stan\anaconda3\lib\site-packages\pdfminer\pdfdocument.py", line 590, in _initialize_password
handler = factory(docid, param, password)
File "C:\Users\Stan\anaconda3\lib\site-packages\pdfminer\pdfdocument.py", line 283, in __init__
self.init()
File "C:\Users\Stan\anaconda3\lib\site-packages\pdfminer\pdfdocument.py", line 291, in init
self.init_key()
File "C:\Users\Stan\anaconda3\lib\site-packages\pdfminer\pdfdocument.py", line 304, in init_key
self.key = self.authenticate(self.password)
File "C:\Users\Stan\anaconda3\lib\site-packages\pdfminer\pdfdocument.py", line 354, in authenticate
key = self.authenticate_user_password(password)
File "C:\Users\Stan\anaconda3\lib\site-packages\pdfminer\pdfdocument.py", line 361, in authenticate_user_password
if self.verify_encryption_key(key):
File "C:\Users\Stan\anaconda3\lib\site-packages\pdfminer\pdfdocument.py", line 368, in verify_encryption_key
u = self.compute_u(key)
File "C:\Users\Stan\anaconda3\lib\site-packages\pdfminer\pdfdocument.py", line 326, in compute_u
result = ARC4.new(key).encrypt(hash.digest()) # 4
File "C:\Users\Stan\anaconda3\lib\site-packages\Crypto\Cipher\ARC4.py", line 132, in new
return ARC4Cipher(key, *args, **kwargs)
File "C:\Users\Stan\anaconda3\lib\site-packages\Crypto\Cipher\ARC4.py", line 60, in __init__
result = _raw_arc4_lib.ARC4_stream_init(c_uint8_ptr(key),
File "C:\Users\Stan\anaconda3\lib\site-packages\cffi\api.py", line 912, in __getattr__
make_accessor(name)
File "C:\Users\Stan\anaconda3\lib\site-packages\cffi\api.py", line 908, in make_accessor
accessors[name](name)
File "C:\Users\Stan\anaconda3\lib\site-packages\cffi\api.py", line 838, in accessor_function
value = backendlib.load_function(BType, name)
AttributeError: function/symbol 'ARC4_stream_init' not found in library 'C:\Users\Stan\anaconda3\lib\site-packages\Crypto\Util\..\Cipher\_ARC4.cp37-win_amd64.pyd': error 0x7f
Solution:
Downgrade:
pip install pycryptodome==3.0.0
Two methods
Method 1:
# Installation
$ pip install arc4
# Import ARC4 package
from arc4 import ARC4
Method 2:
# Installation
$ pip install crypto
# Import ARC4 package
from Crypto.Cipher import ARC4