Re: [AMBER] Error with PDB4AMBER

From: Vinicius Wilian Cruzeiro <>
Date: Tue, 19 Oct 2021 18:33:30 +0000

Hello Amith,

Did you "source" before calling pdb4amber?


Vinícius Wilian D. Cruzeiro, PhD
Postdoctoral Researcher
Department of Chemistry
Stanford University
Twitter: .vwcruzeiro
From: Rangarajan, Amith <>
Sent: Tuesday, October 19, 2021 11:28 AM
To: <>
Subject: [AMBER] Error with PDB4AMBER


upon calling pdb4amber ( pdb4amber -h) , i am getting this error message .
File "/opt/amber20/bin/pdb4amber", line 11, in <module>
    load_entry_point('pdb4amber==1.7.dev0', 'console_scripts', 'pdb4amber')()
  File "/usr/lib/python3.6/site-packages/pkg_resources/", line 476, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/usr/lib/python3.6/site-packages/pkg_resources/", line 2700, in load_entry_point
    return ep.load()
  File "/usr/lib/python3.6/site-packages/pkg_resources/", line 2318, in load
    return self.resolve()
  File "/usr/lib/python3.6/site-packages/pkg_resources/", line 2324, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
  File "/opt/amber20/lib/python3.6/site-packages/pdb4amber-1.7.dev0-py3.6.egg/pdb4amber/", line 1, in <module>
    from . import pdb4amber
  File "/opt/amber20/lib/python3.6/site-packages/pdb4amber-1.7.dev0-py3.6.egg/pdb4amber/", line 7, in <module>
    import parmed
ModuleNotFoundError: No module named 'parmed'
Not sure what is needed to fix this or if i am doing something wrong.

please share your thoughts and suggestions.

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Received on Tue Oct 19 2021 - 12:00:03 PDT
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