Error when setting up the quandra_py environment

ANASTASIOS_CHATZIKRYSTALLIS · July 6, 2026, 1:53am

I installed Anaconda 2.7.1 successfully. Then I did what the PDF “Creating an Environment with a Speciﬁc Version of Python” says, in order to setup an environment quantra_py. I got an error about Matplotlib.
Here is the error message I got.

(base) C:\Users\TASOS>conda env create -f https://quantra.quantinsti.com/downloads/machinelearning/environment.yml

3 channel Terms of Service accepted
ERROR conda.plugins.manager:detect_environment_specifier(598): EnvironmentSpec hook: an error occurred when handling ‘https://quantra.quantinsti.com/downloads/machinelearning/environment.yml’ with plugin ‘explicit’. [Errno 22] Invalid argument: ‘https:\quantra.quantinsti.com\downloads\machinelearning\environment.yml’
Channels:

conda-forge
defaults
Platform: win-64
Collecting package metadata (repodata.json): done
Solving environment: done

==> WARNING: A newer version of conda exists. <==
current version: 25.11.1
latest version: 26.5.3

Please update conda by running

$ conda update -n base -c defaults conda

Downloading and Extracting Packages:
mkl-2026.0.0 | 109.1 MB | ############################################################################ | 100%
gensim-4.3.0 | 18.5 MB | ############################################################################ | 100%
scipy-1.10.1 | 17.8 MB | ############################################################################ | 100%
python-3.11.9 | 17.4 MB | ############################################################################ | 100%
llvmlite-0.43.0 | 16.3 MB | ############################################################################ | 100%
icu-78.3 | 14.3 MB | ############################################################################ | 100%
pandas-2.2.2 | 13.9 MB | ############################################################################ | 100%
scikit-learn-1.5.1 | 9.0 MB | ############################################################################ | 100%
openssl-3.6.3 | 9.0 MB | ############################################################################ | 100%
jupyterlab-4.2.3 | 7.5 MB | ############################################################################ | 100%
babel-2.18.0 | 7.3 MB | ############################################################################ | 100%

Preparing transaction: done
Verifying transaction: done
Executing transaction: done
Installing pip dependencies: / Ran pip subprocess with arguments:
[‘C:\Users\TASOS\anaconda3\envs\quantra_py\python.exe’, ‘-m’, ‘pip’, ‘install’, ‘-U’, ‘-r’, ‘C:\Users\TASOS\AppData\Local\Temp\condaenv.r_jkpzhq.requirements.txt’, ‘–exists-action=b’]
Pip subprocess output:
Collecting arch==7.0.0 (from -r C:\Users\TASOS\AppData\Local\Temp\condaenv.r_jkpzhq.requirements.txt (line 1))
Downloading arch-7.0.0-cp311-cp311-win_amd64.whl.metadata (13 kB)
Collecting astunparse==1.6.3 (from -r C:\Users\TASOS\AppData\Local\Temp\condaenv.r_jkpzhq.requirements.txt (line 2))
Downloading astunparse-1.6.3-py2.py3-none-any.whl.metadata (4.4 kB)
Collecting autopep8==2.3.1 (from -r C:\Users\TASOS\AppData\Local\Temp\condaenv.r_jkpzhq.requirements.txt (line 3))
Downloading autopep8-2.3.1-py2.py3-none-any.whl.metadata (16 kB)
Collecting bert_serving_client==1.10.0 (from -r C:\Users\TASOS\AppData\Local\Temp\condaenv.r_jkpzhq.requirements.txt (line 4))
Downloading bert_serving_client-1.10.0-py2.py3-none-any.whl.metadata (63 kB)
Collecting bert_serving_server==1.10.0 (from -r C:\Users\TASOS\AppData\Local\Temp\condaenv.r_jkpzhq.requirements.txt (line 5))
Downloading bert_serving_server-1.10.0-py3-none-any.whl.metadata (63 kB)
Collecting bokeh==3.5.0 (from -r C:\Users\TASOS\AppData\Local\Temp\condaenv.r_jkpzhq.requirements.txt (line 6))
Downloading bokeh-3.5.0-py3-none-any.whl.metadata (12 kB)
Collecting botometer==2.0.1 (from -r C:\Users\TASOS\AppData\Local\Temp\condaenv.r_jkpzhq.requirements.txt (line 7))
Downloading botometer-2.0.1-py3-none-any.whl.metadata (277 bytes)
Collecting cryptocompare==0.7.6 (from -r C:\Users\TASOS\AppData\Local\Temp\condaenv.r_jkpzhq.requirements.txt (line 8))
Downloading cryptocompare-0.7.6.tar.gz (6.0 kB)
Installing build dependencies: started
Installing build dependencies: finished with status ‘done’
Getting requirements to build wheel: started
Getting requirements to build wheel: finished with status ‘done’
Preparing metadata (pyproject.toml): started
Preparing metadata (pyproject.toml): finished with status ‘done’
Collecting cvxpy==1.5.2 (from -r C:\Users\TASOS\AppData\Local\Temp\condaenv.r_jkpzhq.requirements.txt (line 9))
Downloading cvxpy-1.5.2-cp311-cp311-win_amd64.whl.metadata (9.1 kB)
Collecting fredapi==0.5.2 (from -r C:\Users\TASOS\AppData\Local\Temp\condaenv.r_jkpzhq.requirements.txt (line 10))
Downloading fredapi-0.5.2-py3-none-any.whl.metadata (5.0 kB)
Collecting GoogleNews==1.6.14 (from -r C:\Users\TASOS\AppData\Local\Temp\condaenv.r_jkpzhq.requirements.txt (line 11))
Downloading GoogleNews-1.6.14-py3-none-any.whl.metadata (3.9 kB)
Collecting graphviz==0.20.3 (from -r C:\Users\TASOS\AppData\Local\Temp\condaenv.r_jkpzhq.requirements.txt (line 12))
Downloading graphviz-0.20.3-py3-none-any.whl.metadata (12 kB)
Collecting Historic_Crypto==0.1.6 (from -r C:\Users\TASOS\AppData\Local\Temp\condaenv.r_jkpzhq.requirements.txt (line 13))
Downloading Historic_Crypto-0.1.6-py3-none-any.whl.metadata (3.8 kB)
Collecting hurst==0.0.5 (from -r C:\Users\TASOS\AppData\Local\Temp\condaenv.r_jkpzhq.requirements.txt (line 14))
Downloading hurst-0.0.5-py3-none-any.whl.metadata (3.6 kB)
Collecting ipywidgets==8.1.3 (from -r C:\Users\TASOS\AppData\Local\Temp\condaenv.r_jkpzhq.requirements.txt (line 15))
Downloading ipywidgets-8.1.3-py3-none-any.whl.metadata (2.4 kB)
Collecting matplotlib==3.9.1 (from -r C:\Users\TASOS\AppData\Local\Temp\condaenv.r_jkpzhq.requirements.txt (line 16))
Downloading matplotlib-3.9.1.tar.gz (36.1 MB)
---------------------------------------- 36.1/36.1 MB 6.0 MB/s 0:00:06
Installing build dependencies: started
Installing build dependencies: finished with status ‘done’
Getting requirements to build wheel: started
Getting requirements to build wheel: finished with status ‘done’
Installing backend dependencies: started
Installing backend dependencies: finished with status ‘done’
Preparing metadata (pyproject.toml): started
Preparing metadata (pyproject.toml): still running…
Preparing metadata (pyproject.toml): finished with status ‘error’

Pip subprocess error:
error: subprocess-exited-with-error

× Preparing metadata (pyproject.toml) did not run successfully.
│ exit code: 1
╰─> [51 lines of output]
+ meson setup C:\Users\TASOS\AppData\Local\Temp\pip-install-a7i183cp\matplotlib_71352ed4da714d59811a3448a9ff8e43 C:\Users\TASOS\AppData\Local\Temp\pip-install-a7i183cp\matplotlib_71352ed4da714d59811a3448a9ff8e43.mesonpy-kv3ljqfm -Dbuildtype=release -Db_ndebug=if-release -Db_vscrt=md --native-file=C:\Users\TASOS\AppData\Local\Temp\pip-install-a7i183cp\matplotlib_71352ed4da714d59811a3448a9ff8e43.mesonpy-kv3ljqfm\meson-python-native-file.ini
The Meson build system
Version: 1.11.1
Source dir: C:\Users\TASOS\AppData\Local\Temp\pip-install-a7i183cp\matplotlib_71352ed4da714d59811a3448a9ff8e43
Build dir: C:\Users\TASOS\AppData\Local\Temp\pip-install-a7i183cp\matplotlib_71352ed4da714d59811a3448a9ff8e43.mesonpy-kv3ljqfm
Build type: native build
Program python3 found: YES
Activating VS 18.6.3
Project name: matplotlib
Project version: 3.9.1
C compiler for the host machine: cl (msvc 19.51.36246 “Microsoft (R) C/C++ Optimizing Compiler Version 19.51.36246 for x64”)
C linker for the host machine: link link 14.51.36246.0
C++ compiler for the host machine: cl (msvc 19.51.36246 “Microsoft (R) C/C++ Optimizing Compiler Version 19.51.36246 for x64”)
C++ linker for the host machine: link link 14.51.36246.0
Host machine cpu family: x86_64
Host machine cpu: x86_64
Program python found: YES (C:\Users\TASOS\anaconda3\envs\quantra_py\python.exe)
Run-time dependency python found: YES 3.11
Did not find pkg-config by name ‘pkg-config’
Found pkg-config: NO
pybind11-config found: YES (C:\Users\TASOS\AppData\Local\Temp\pip-build-env-1_8f1uzv\overlay\Scripts\pybind11-config.EXE) 3.0.4
Run-time dependency pybind11 found: YES 3.0.4
Downloading freetype-2.6.1 source from https://download.savannah.gnu.org/releases/freetype/freetype-old/freetype-2.6.1.tar.gz
[ASN1: NOT_ENOUGH_DATA] not enough data (_ssl.c:4047)
WARNING: failed to download with error: could not get https://download.savannah.gnu.org/releases/freetype/freetype-old/freetype-2.6.1.tar.gz; is the internet available?. Trying after a delay…
[ASN1: NOT_ENOUGH_DATA] not enough data (_ssl.c:4047)
WARNING: failed to download with error: could not get https://download.savannah.gnu.org/releases/freetype/freetype-old/freetype-2.6.1.tar.gz; is the internet available?. Trying after a delay…
[ASN1: NOT_ENOUGH_DATA] not enough data (_ssl.c:4047)
WARNING: failed to download with error: could not get https://download.savannah.gnu.org/releases/freetype/freetype-old/freetype-2.6.1.tar.gz; is the internet available?. Trying after a delay…
[ASN1: NOT_ENOUGH_DATA] not enough data (_ssl.c:4047)
WARNING: failed to download with error: could not get https://download.savannah.gnu.org/releases/freetype/freetype-old/freetype-2.6.1.tar.gz; is the internet available?. Trying after a delay…
[ASN1: NOT_ENOUGH_DATA] not enough data (_ssl.c:4047)
WARNING: failed to download with error: could not get https://download.savannah.gnu.org/releases/freetype/freetype-old/freetype-2.6.1.tar.gz; is the internet available?. Trying after a delay…
[ASN1: NOT_ENOUGH_DATA] not enough data (_ssl.c:4047)
Downloading freetype-2.6.1 source from https://downloads.sourceforge.net/project/freetype/freetype2/2.6.1/freetype-2.6.1.tar.gz
[ASN1: NOT_ENOUGH_DATA] not enough data (_ssl.c:4047)
WARNING: failed to download with error: could not get https://downloads.sourceforge.net/project/freetype/freetype2/2.6.1/freetype-2.6.1.tar.gz; is the internet available?. Trying after a delay…
[ASN1: NOT_ENOUGH_DATA] not enough data (_ssl.c:4047)
WARNING: failed to download with error: could not get https://downloads.sourceforge.net/project/freetype/freetype2/2.6.1/freetype-2.6.1.tar.gz; is the internet available?. Trying after a delay…
[ASN1: NOT_ENOUGH_DATA] not enough data (_ssl.c:4047)
WARNING: failed to download with error: could not get https://downloads.sourceforge.net/project/freetype/freetype2/2.6.1/freetype-2.6.1.tar.gz; is the internet available?. Trying after a delay…
[ASN1: NOT_ENOUGH_DATA] not enough data (_ssl.c:4047)
WARNING: failed to download with error: could not get https://downloads.sourceforge.net/project/freetype/freetype2/2.6.1/freetype-2.6.1.tar.gz; is the internet available?. Trying after a delay…
[ASN1: NOT_ENOUGH_DATA] not enough data (_ssl.c:4047)
WARNING: failed to download with error: could not get https://downloads.sourceforge.net/project/freetype/freetype2/2.6.1/freetype-2.6.1.tar.gz; is the internet available?. Trying after a delay…
[ASN1: NOT_ENOUGH_DATA] not enough data (_ssl.c:4047)
ERROR: Subproject freetype-2.6.1 is buildable: NO

  ..\extern\meson.build:19:18: ERROR: could not get https://downloads.sourceforge.net/project/freetype/freetype2/2.6.1/freetype-2.6.1.tar.gz; is the internet available?

  A full log can be found at C:\Users\TASOS\AppData\Local\Temp\pip-install-a7i183cp\matplotlib_71352ed4da714d59811a3448a9ff8e43\.mesonpy-kv3ljqfm\meson-logs\meson-log.txt
  [end of output]

note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> matplotlib

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

failed

CondaEnvException: Pip failed

(base) C:\Users\TASOS>

=================================

Now Anaconda Navigator has an environment quandra_py, there I tried to install Matplotlib through Navigator interface and it was successful.

I try in my computer to write some lines of Python code using the new environment (quandra_py) and I get a new error, see below

(quantra_py) C:\Users\TASOS>python
Python 3.11.9 | packaged by conda-forge | (main, Apr 19 2024, 18:27:10) [MSC v.1938 64 bit (AMD64)] on win32
Type “help”, “copyright”, “credits” or “license” for more information.

import pandas as pd
import yfinance as yf
Traceback (most recent call last):
File “”, line 1, in
ModuleNotFoundError: No module named ‘yfinance’

================================

Any idea what to do ???

Thank you in advance

Rekhit_Pachanekar · July 6, 2026, 9:54am

Hi,

I believe the virtual environment is not completely installed. This is why you are getting the module not found error. Can you try deleting the existing “half-installed” environment and reinstalling the virtual environment from scratch.

Daniel_Puleo · August 7, 2026, 6:42am

I’m trying to open jupyter notebook, but I’m getting this error:

"
(quantra_py) C:\Users\danie>jupyter notebook
Traceback (most recent call last):
File “C:\Users\danie\anaconda3\envs\quantra_py\lib\runpy.py”, line 197, in _run_module_as_main
return run_code(code, main_globals, None,
File “C:\Users\danie\anaconda3\envs\quantra_py\lib\runpy.py”, line 87, in run_code
exec(code, run_globals)
File "C:\Users\danie\anaconda3\envs\quantra_py\Scripts\jupyter-notebook.EXE_main.py", line 2, in
File “C:\Users\danie\anaconda3\envs\quantra_py\lib\site-packages\notebook\app.py”, line 13, in
from jupyter_server.base.handlers import JupyterHandler
File “C:\Users\danie\anaconda3\envs\quantra_py\lib\site-packages\jupyter_server\base\handlers.py”, line 24, in
from tornado import web
File “”, line 1055, in handle_fromlist
File "C:\Users\danie\anaconda3\envs\quantra_py\lib\site-packages\tornado_init.py", line 66, in getattr
return importlib.import_module(“.” + name, name)
File "C:\Users\danie\anaconda3\envs\quantra_py\lib\importlib_init.py", line 127, in import_module
return _bootstrap.gcd_import(name[level:], package, level)
File “C:\Users\danie\anaconda3\envs\quantra_py\lib\site-packages\tornado\web.py”, line 88, in
from tornado.httpserver import HTTPServer
File “C:\Users\danie\anaconda3\envs\quantra_py\lib\site-packages\tornado\httpserver.py”, line 32, in
from tornado.http1connection import HTTP1ServerConnection, HTTP1ConnectionParameters
File “C:\Users\danie\anaconda3\envs\quantra_py\lib\site-packages\tornado\http1connection.py”, line 34, in
from tornado import iostream
File “”, line 1055, in handle_fromlist
File "C:\Users\danie\anaconda3\envs\quantra_py\lib\site-packages\tornado_init.py", line 66, in getattr
return importlib.import_module(“.” + name, name)
File "C:\Users\danie\anaconda3\envs\quantra_py\lib\importlib_init.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File “C:\Users\danie\anaconda3\envs\quantra_py\lib\site-packages\tornado\iostream.py”, line 40, in
from tornado.netutil import ssl_wrap_socket, _client_ssl_defaults, _server_ssl_defaults
File “C:\Users\danie\anaconda3\envs\quantra_py\lib\site-packages\tornado\netutil.py”, line 35, in
_client_ssl_defaults = ssl.create_default_context(ssl.Purpose.SERVER_AUTH)
File “C:\Users\danie\anaconda3\envs\quantra_py\lib\ssl.py”, line 751, in create_default_context
context.load_default_certs(purpose)
File “C:\Users\danie\anaconda3\envs\quantra_py\lib\ssl.py”, line 575, in load_default_certs
self._load_windows_store_certs(storename, purpose)
File “C:\Users\danie\anaconda3\envs\quantra_py\lib\ssl.py”, line 567, in _load_windows_store_certs
self.load_verify_locations(cadata=certs)
ssl.SSLError: [ASN1: NOT_ENOUGH_DATA] not enough data (_ssl.c:4178)
"

Rekhit_Pachanekar · August 7, 2026, 2:20pm

Thanks for the detailed traceback, that helps a lot. This isn’t a Jupyter or Quantra problem. It’s a known Windows + Python ssl quirk: when Jupyter starts, Python reads the certificates from your Windows certificate store, and certain OpenSSL builds (the newer 3.5.x ones in particular) don’t know what happens and stop with the exact [ASN1: NOT_ENOUGH_DATA] error you’re seeing. You can see in ssl.py at _load_windows_store_certs , which confirms the cause.

The cleanest fix is to uninstall the current quantra.py environment and reinstall it. If that doesn’t help, we can go in more detail as well.

Error when setting up the quandra_py environment

I installed Anaconda 2.7.1 successfully. Then I did what the PDF “Creating an Environment with a Speciﬁc Version of Python” says, in order to setup an environment quantra_py. I got an error about Matplotlib. Here is the error message I got.

I try in my computer to write some lines of Python code using the new environment (quandra_py) and I get a new error, see below

I installed Anaconda 2.7.1 successfully. Then I did what the PDF “Creating an Environment with a Speciﬁc Version of Python” says, in order to setup an environment quantra_py. I got an error about Matplotlib.
Here is the error message I got.