The folder you are executing pip from can no longer be found – CentOS

I have a virtual machine under Hyper V that represents a cluster single-node of Hortonworks Data Platform with the following characteristics:

• OS: centos 7.6.1810 minimal

• python: 2.7.5

I installed pip package with the following command :
yum -y install python-pip

The installation is well finished, but when I want to check the version of pip pip -V it gives me this error : The folder you are executing pip from can no longer be found.

My folder /usr/local/bin/ does not contain any files or folders.

paths of python2.7 : /usr/bin/python2.7 /usr/bin/python2 /usr/bin/python

the cmd which python returns : /bin/python

paths of pip : /usr/bin/pip /usr/bin/pip2 /usr/bin/pip2.7

which -a pip
/bin/pip
/usr/bin/pip

I’m stuck thanks for helping me please.