
Research
npm Malware Targets Telegram Bot Developers with Persistent SSH Backdoors
Malicious npm packages posing as Telegram bot libraries install SSH backdoors and exfiltrate data from Linux developer machines.
Psf is a Python library to calculate Point Spread Functions (PSF) for fluorescence microscopy.
The psf library is no longer actively developed.
:Author: Christoph Gohlke <https://www.cgohlke.com>
_
:License: BSD 3-Clause
:Version: 2025.1.1
Install the psf package and all dependencies from the
Python Package Index <https://pypi.org/project/psf/>
_::
python -m pip install -U "psf[all]"
See Examples
_ for using the programming interface.
Source code and support are available on
GitHub <https://github.com/cgohlke/psf>
_.
This revision was tested with the following requirements and dependencies (other versions may work):
CPython <https://www.python.org>
_ 3.10.11, 3.11.9, 3.12.8, 3.13.1 64-bitNumPy <https://pypi.org/project/numpy/>
_ 2.1.3Matplotlib <https://pypi.org/project/matplotlib/>
_ 3.10.0
(optional for plotting)2025.1.1
2024.5.24
2024.4.24
2024.1.6
2023.4.26
2022.9.26
2022.9.12
2021.6.6
2020.1.1
2019.10.14
2019.4.22
import psf args = dict( ... shape=(32, 32), ... dims=(4, 4), ... ex_wavelen=488, ... em_wavelen=520, ... num_aperture=1.2, ... refr_index=1.333, ... pinhole_radius=0.55, ... pinhole_shape='round', ... ) obsvol = psf.PSF(psf.GAUSSIAN | psf.CONFOCAL, **args) obsvol.sigma.ou (2.588..., 1.370...) obsvol = psf.PSF(psf.ISOTROPIC | psf.CONFOCAL, **args) print(obsvol, end='') PSF ISOTROPIC|CONFOCAL shape: (32, 32) pixel dimensions: (4.00, 4.00) um, (55.64, 61.80) ou, (8.06, 8.06) au excitation wavelength: 488.0 nm emission wavelength: 520.0 nm numeric aperture: 1.20 refractive index: 1.33 half cone angle: 64.19 deg magnification: 1.00 underfilling: 1.00 pinhole radius: 0.550 um, 8.498 ou, 1.1086 au, 4.40 px computing time: ... ms obsvol[0, :3] array([1. , 0.51071, 0.04397])
write the image plane to file
obsvol.slice(0).tofile('_test_slice.bin')
write a full 3D PSF volume to file
obsvol.volume().tofile('_test_volume.bin')
Refer to psf_example.py
in the source distribution for more examples.
FAQs
Point Spread Function calculations for fluorescence microscopy
We found that psf demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Research
Malicious npm packages posing as Telegram bot libraries install SSH backdoors and exfiltrate data from Linux developer machines.
Security News
pip, PDM, pip-audit, and the packaging library are already adding support for Python’s new lock file format.
Product
Socket's Go support is now generally available, bringing automatic scanning and deep code analysis to all users with Go projects.