Problem with nmap (AttributeError: module 'nmap' has no attribute 'PortScanner')

Hi

I use Pycharm and I 've got a problem with the nmpa import

import nmap
nm = nmap.PortScanner()
nm.scan('localhost', arguments= '-S 127.0.0.1')
for host in nm.all_hosts():
print('Host : %s (%s)' % (host, nm[host].hostname()))

Always the same error

nm = nmap.PortScanner()
AttributeError: module 'nmap' has no attribute 'PortScanner'

But if I test the code under python launch since a bash console, no error.

I don't know where find an issue

In the 2 cases, it's the same version of python (3.7) and in Pycharm, python-nmap is install.

Any idea ? Thx