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I am using CentOS 7 os.
I installed python3.6 on this machine.
pip3 is latest version 21.
After that i installed obfsproxy like this :

To use obfsproxy you will need Python (>= 2.7) and pip.

pip3 install pathlib
pip3 install pyopenssl
pip3 install Twisted
pip3 install obfsproxy

Here are installation path :

/usr/local/lib/python3.6/site-packages/obfsproxy-0.2.13-py3.6.egg-info

/usr/local/lib/python3.6/site-packages/obfsproxy

/usr/local/lib/python3.6/site-packages/obfsproxy/pyobfsproxy.py

/usr/local/bin/obfsproxy

Now after running obfsproxy command i got this error :

Traceback (most recent call last):
  File "/usr/local/bin/obfsproxy", line 11, in <module>
    load_entry_point('obfsproxy==0.2.13', 'console_scripts', 'obfsproxy')()
  File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 476, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 2700, in load_entry_point
    return ep.load()
  File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 2318, in load
    return self.resolve()
  File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 2324, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
  File "/usr/local/lib/python3.6/site-packages/obfsproxy/pyobfsproxy.py", line 183
    except ValueError, err:
                     ^
SyntaxError: invalid syntax
[root@blobloblo ~]# obfsproxysite-packages/pkg_resources/__init__.py", line 476, in load_entry_point

What version of python is suitable for this script and how can i fix this error?
I tried some older python versions.
Buy manual installation has some error and this is better to install python3 from default repository.
Mean for install python3 i did this :

centos is updated totally.

sudo yum install -y epel-release

sudo yum install -y libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev

sudo yum -y groupinstall "Development Tools"
gcc --version

openssl version
openssl version -d

sudo yum install -y openssl-devel libyaml-devel libffi-devel bzip2-devel
sudo yum install -y make automake gcc glibc
sudo yum install -y gcc

python -V
python --version
python2 -V
python3 -V

sudo yum install python3
python3 -m pip install --upgrade pip

Here is https://pypi.org/project/obfsproxy/ link.

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