Install & Compatibility
Where this runs
tested against v1.5.0 · pip install
no network on importno background threads
Install × environment matrix
Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux
py 3.10
✕ build_error
✕ build_error
py 3.11
✕ build_error
✓ 5.9s
py 3.12
✕ build_error
✓ 5.7s
py 3.13
✕ build_error
✓ 6.6s
py 3.9
✕ build_error
✓ 7.9s
128MB installed
● package 128MB
Code
Verified usage
Verified import paths — ran on the pinned version, not inferred.
DeviceNotify
✓ from joulescope import DeviceNotify
✗ from joulescope import Joulescope
scan
✓ from joulescope import scan
✗ from joulescope import Joulescope
JlsWriter
✓ from joulescope import JlsWriter
✗ from joulescope import Joulescope
Scan for a Joulescope device and read instantaneous current and voltage.
from joulescope import Joulescope, scan
import time
device = None
for info in scan():
if info['brand'] == 'Joulescope':
device = Joulescope(info['serial_number'])
break
if device is None:
print('No Joulescope device found')
else:
with device:
current = device.current()
voltage = device.voltage()
print(f'Current: {current:.3f} A, Voltage: {voltage:.3f} V')
time.sleep(1)
joulescope --version
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Version history
1.5.0latest on PyPI · released Apr 28, 2026
Audit
Dependencies
pyjoulescope_driverrequiredUSB/network driver for Joulescope hardware
pyjlsrequiredJLS file format reading/writing
numpyrequiredData processing and array handling
pymonocypherrequiredEncryption support for device communication
psutiloptionalSystem resource monitoring