python -m pdb -c continue flag arguments not understood -

i'm trying run python -m pdb -c continue foo.py, in order enable debugging upon errors. -c continue arguments should allow me this without specifying 'c' upon program start. however, receive error: error: -c not exist. demonstrate versions , setup below virtualenv example.

$ virtualenv --version 15.1.0 $ virtualenv tempenv new python executable in tempenv/bin/python installing setuptools, pip...done. $ source tempenv/bin/activate (tempenv)$ python /usr0/home/eqzx/tempenv/bin/python (tempenv)$ python --version python 2.7.6 (tempenv)$ echo "1/0" > foo.py (tempenv)$ python foo.py traceback (most recent call last):   file "foo.py", line 1, in <module>     1/0 zerodivisionerror: integer division or modulo 0 

then:

(tempenv)$ python -m pdb -c continue foo.py error: -c not exist 

after installing pdb locally virtualenv:

(tempenv)$ pip install -i pdb (tempenv)$ pdb /usr0/home/eqzx/tempenv/bin/pdb (tempenv)$ python -m pdb -c continue foo.py error: -c not exist 

running without -c continue works fine (although i'm surprised see using /usr/lib/python2.7/pdb.py instead of local pdb? when retried virtualenv --no-site-packages, still showed same path):

(tempenv)$ python -m pdb foo.py > /usr0/home/eqzx/foo.py(1)<module>() -> 1/0 (pdb) c traceback (most recent call last):   file "/usr/lib/python2.7/pdb.py", line 1314, in main     pdb._runscript(mainpyfile)   file "/usr/lib/python2.7/pdb.py", line 1233, in _runscript     self.run(statement)   file "/usr/lib/python2.7/bdb.py", line 400, in run     exec cmd in globals, locals   file "<string>", line 1, in <module>   file "foo.py", line 1, in <module>     1/0 zerodivisionerror: integer division or modulo 0 uncaught exception. entering post mortem debugging running 'cont' or 'step' restart program > /usr0/home/eqzx/foo.py(1)<module>() -> 1/0 (pdb)  

you using python 2.7, doesn't support -c parameter:

new in version 3.2: pdb.py accepts -c option executes commands if given in .pdbrc file, see debugger commands.

by upgrading python version 3.6 solve problem.

i didn't find package on pypi backports 3.2+ pdb package python 2.7. the 1 trying install "password database".