ModuleNotFoundError

Python 3.11.2: /usr/bin/python
Thu Dec 11 03:50:23 2025

A problem occurred in a Python script. Here is the sequence of function calls leading up to the error, in the order they occurred.

/usr/lib/python3/dist-packages/flup/server/fcgi_base.py in run(self=<flup.server.fcgi_base.Request object>)

565 """Runs the handler, flushes the streams, and ends the request."""

566 try:

=> 567 protocolStatus, appStatus = self.server.handler(self)

568 except:

569 output = io.StringIO()

protocolStatus undefined, appStatus undefined, self = <flup.server.fcgi_base.Request object>, self.server = <flup.server.fcgi.WSGIServer object>, self.server.handler = <bound method BaseFCGIServer.handler of <flup.server.fcgi.WSGIServer object>>

/usr/lib/python3/dist-packages/flup/server/fcgi_base.py in handler(self=<flup.server.fcgi.WSGIServer object>, req=<flup.server.fcgi_base.Request object>)

1129 try:

1130 try:

=> 1131 result = self.application(environ, start_response)

1132 try:

1133 for data in result:

result = None, self = <flup.server.fcgi.WSGIServer object>, self.application = <function application>, environ = {'CONTENT_LENGTH': '0', 'CONTEXT_DOCUMENT_ROOT': '/home/www/public_html/oli/', 'CONTEXT_PREFIX': '', 'DOCUMENT_ROOT': '/home/www/public_html/oli/', 'GATEWAY_INTERFACE': 'CGI/1.1', 'HTTPS': 'on', 'HTTP_ACCEPT': '*/*', 'HTTP_ACCEPT_ENCODING': 'gzip, br, zstd, deflate', 'HTTP_CONNECTION': 'close', 'HTTP_HOST': 'praxis.oliver-richters.de', ...}, start_response = <function BaseFCGIServer.handler.<locals>.start_response>

/usr/lib/python3/dist-packages/cm4all/fcgi/launcher.py in application(environ={'CONTENT_LENGTH': '0', 'CONTEXT_DOCUMENT_ROOT': '/home/www/public_html/oli/', 'CONTEXT_PREFIX': '', 'DOCUMENT_ROOT': '/home/www/public_html/oli/', 'GATEWAY_INTERFACE': 'CGI/1.1', 'HTTPS': 'on', 'HTTP_ACCEPT': '*/*', 'HTTP_ACCEPT_ENCODING': 'gzip, br, zstd, deflate', 'HTTP_CONNECTION': 'close', 'HTTP_HOST': 'praxis.oliver-richters.de', ...}, start_response=<function BaseFCGIServer.handler.<locals>.start_response>)

15

16 def application(environ, start_response):

=> 17 return cache[environ['SCRIPT_FILENAME']](environ, start_response)

18

19 def launch():

global cache = {}, environ = {'CONTENT_LENGTH': '0', 'CONTEXT_DOCUMENT_ROOT': '/home/www/public_html/oli/', 'CONTEXT_PREFIX': '', 'DOCUMENT_ROOT': '/home/www/public_html/oli/', 'GATEWAY_INTERFACE': 'CGI/1.1', 'HTTPS': 'on', 'HTTP_ACCEPT': '*/*', 'HTTP_ACCEPT_ENCODING': 'gzip, br, zstd, deflate', 'HTTP_CONNECTION': 'close', 'HTTP_HOST': 'praxis.oliver-richters.de', ...}, start_response = <function BaseFCGIServer.handler.<locals>.start_response>

/usr/lib/python3/dist-packages/cm4all/fcgi/launcher.py in __missing__(self={}, path='/home/www/public_html/oli/sfc-models/barth-richters-ecological-collapse-model-2019.py')

8 mod = imp.load_compiled(name, path)

9 else:

=> 10 mod = imp.load_source(name, path)

11 self[path] = value = getattr(mod, 'application')

12 return value

mod undefined, global imp = <module 'imp' from '/usr/lib/python3.11/imp.py'>, imp.load_source = <function load_source>, name = 'barth-richters-ecological-collapse-model-2019', path = '/home/www/public_html/oli/sfc-models/barth-richters-ecological-collapse-model-2019.py'

/usr/lib/python3.11/imp.py in load_source(name='barth-richters-ecological-collapse-model-2019', pathname='/home/www/public_html/oli/sfc-models/barth-richters-ecological-collapse-model-2019.py', file=None)

170 module = _exec(spec, sys.modules[name])

171 else:

=> 172 module = _load(spec)

173 # To allow reloading to potentially work, use a non-hacked loader which

174 # won't rely on a now-closed file object.

module undefined, global _load = <function _load>, spec = ModuleSpec(name='barth-richters-ecological-colla...arth-richters-ecological-collapse-model-2019.py')

/usr/bin/<frozen importlib._bootstrap> in _load(spec=ModuleSpec(name='barth-richters-ecological-colla...arth-richters-ecological-collapse-model-2019.py'))

/usr/bin/<frozen importlib._bootstrap> in _load_unlocked(spec=ModuleSpec(name='barth-richters-ecological-colla...arth-richters-ecological-collapse-model-2019.py'))

/usr/bin/<frozen importlib._bootstrap_external> in exec_module(self=<imp._LoadSourceCompatibility object>, module=<module 'barth-richters-ecological-collapse-mode...arth-richters-ecological-collapse-model-2019.py'>)

/usr/bin/<frozen importlib._bootstrap> in _call_with_frames_removed(f=<built-in function exec>, *args=(<code object <module> at 0x7fa9d0004650, file "/...hters-ecological-collapse-model-2019.py", line 1>, {'__builtins__': {'ArithmeticError': <class 'ArithmeticError'>, 'AssertionError': <class 'AssertionError'>, 'AttributeError': <class 'AttributeError'>, 'BaseException': <class 'BaseException'>, 'BaseExceptionGroup': <class 'BaseExceptionGroup'>, 'BlockingIOError': <class 'BlockingIOError'>, 'BrokenPipeError': <class 'BrokenPipeError'>, 'BufferError': <class 'BufferError'>, 'BytesWarning': <class 'BytesWarning'>, 'ChildProcessError': <class 'ChildProcessError'>, ...}, '__cached__': '/home/www/public_html/oli/sfc-models/__pycache__...rs-ecological-collapse-model-2019.cpython-311.pyc', '__doc__': None, '__file__': '/home/www/public_html/oli/sfc-models/barth-richters-ecological-collapse-model-2019.py', '__loader__': <imp._LoadSourceCompatibility object>, '__name__': 'barth-richters-ecological-collapse-model-2019', '__package__': '', '__spec__': ModuleSpec(name='barth-richters-ecological-colla...arth-richters-ecological-collapse-model-2019.py')}), **kwds={})

/home/www/public_html/oli/sfc-models/barth-richters-ecological-collapse-model-2019.py in <module>

6 # Routledge, July 2019, ISBN 978-1-1380-3768-7.

7

=> 8 from pylab import exp, log, arctan, pi, plot, legend, savefig, arange, plt, zeros, array, linspace, argmin

9 from numpy import linalg as LA

10 import matplotlib

pylab undefined, exp undefined, log undefined, arctan undefined, pi undefined, plot undefined, legend undefined, savefig undefined, arange undefined, plt undefined, zeros undefined, array undefined, linspace undefined, argmin undefined

ModuleNotFoundError: No module named 'pylab'
      add_note = <built-in method add_note of ModuleNotFoundError object>
      args = ("No module named 'pylab'",)
      msg = "No module named 'pylab'"
      name = 'pylab'
      path = None
      with_traceback = <built-in method with_traceback of ModuleNotFoundError object>