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Thanks for the advice. Unfortunately, it doesn't look like it's working. If I input the command

sudo pip install pyparsing==1.5.7

The output is:

Downloading/unpacking pyparsing==1.5.7
  Running setup.py egg_info for package pyparsing
    Traceback (most recent call last):
      File "<string>", line 16, in <module>
      File "/private/tmp/pip-build-root/pyparsing/setup.py", line 9, in <module>
       from pyparsing import __version__ as pyparsing_version
      File "pyparsing.py", line 629
        nonlocal limit,foundArity
                     ^
    SyntaxError: invalid syntax
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):

  File "<string>", line 16, in <module>

  File "/private/tmp/pip-build-root/pyparsing/setup.py", line 9, in <module>

    from pyparsing import __version__ as pyparsing_version

  File "pyparsing.py", line 629

    nonlocal limit,foundArity

                 ^

SyntaxError: invalid syntax

----------------------------------------
Command python setup.py egg_info failed with error code 1 in /private/tmp/pip-build-root/pyparsing

Not sure where the problem is. If I try to run rosdep install --from-paths src --ignore-src --rosdistro groovy -y, one of first errors I get is Couldn't import dot_parser, loading of dot files will not be possible.

So it seems, that importing a dot parser is a problem, but I don't really know what that means or how to go about getting a solution.

Thanks for the advice. Unfortunately, it doesn't look like it's working. If I input the command

sudo pip install pyparsing==1.5.7

The output is:

Downloading/unpacking pyparsing==1.5.7
  Running setup.py egg_info for package pyparsing
    Traceback (most recent call last):
      File "<string>", line 16, in <module>
      File "/private/tmp/pip-build-root/pyparsing/setup.py", line 9, in <module>
       from pyparsing import __version__ as pyparsing_version
      File "pyparsing.py", line 629
        nonlocal limit,foundArity
                     ^
    SyntaxError: invalid syntax
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):

  File "<string>", line 16, in <module>

  File "/private/tmp/pip-build-root/pyparsing/setup.py", line 9, in <module>

    from pyparsing import __version__ as pyparsing_version

  File "pyparsing.py", line 629

    nonlocal limit,foundArity

                 ^

SyntaxError: invalid syntax

----------------------------------------
Command python setup.py egg_info failed with error code 1 in /private/tmp/pip-build-root/pyparsing

Not sure where the problem is. If I try to run rosdep install --from-paths src --ignore-src --rosdistro groovy -y, one of first errors I get is Couldn't import dot_parser, loading of dot files will not be possible.

So it seems, seems that importing a dot parser is a problem, but I don't really know what that means or how to go about getting a solution.