Python for LJM - Windows, Mac, Linux

Prerequisites

• LabJack T7 or T4
• LJM Library - Install the LJM Library
• Python 2.6, 2.7 or 3.x - Download from https://www.python.org/getit
• Operating system - Windows, Mac OS X, or Linux

Instructions

• Download/extract the .zip file attached at the top of this page.
• Open a terminal/console window.
• Using the command line, navigate to the extracted Python_LJM root directory.
• Install the LJM Python modules by running the following command (remove the "sudo" on Windows):

  sudo python setup.py install

Refer to the download's README.TXT file for requirements, installation, documentation and license information.

Windows Troubleshooting

If running the "python setup.py install" command as described in the above instructions causes the following or similar error:

'python' is not recognized as an internal or external command, operable program or batch file.

That means either Python is not installed on your computer or the Python executable's path was not added to the Windows user or system path. To help resolve this issue, please run the Python Windows installer and in the "Customize Python" window, click the "Add python.exe to Path" option towards the bottom and select "Will be installed on local hard drive".



Then continue the installation as normal. Open a new terminal/console window and then go through our installation instructions again.

Alternatively, after Python is installed you can run the Python executable from its path. For example:

C:\Python27\python.exe setup.py install

Note that the above command uses the Python 2.7 path, and you should use the correct path on your computer which may differ.

Another option is to manually add the Python executable's path to the Windows path as described in the Python documentation.

Code Snippet

from labjack import ljm

# Open first found LabJack
handle = ljm.openS("ANY", "ANY", "ANY")

# Call eReadName to read the serial number from the LabJack.
name = "SERIAL_NUMBER"
result = ljm.eReadName(handle, name)

print("\neReadName result: ")
print("    %s = %f" % (name, result))

File list

Python_LJM_2018_02_23.zip contains:

CHANGES.TXT
LICENSE.TXT
README.TXT
setup.py
Examples\Basic\eAddresses.py
Examples\Basic\eNames.py
Examples\Basic\eReadAddress.py
Examples\Basic\eReadAddresses.py
Examples\Basic\eReadName.py
Examples\Basic\eReadNames.py
Examples\Basic\eWriteAddress.py
Examples\Basic\eWriteAddresses.py
Examples\Basic\eWriteName.py
Examples\Basic\eWriteNames.py
Examples\Basic\write_read_loop_with_config.py
Examples\More\1-Wire\1_wire.py
Examples\More\AIN\dual_ain_loop.py
Examples\More\AIN\single_ain.py
Examples\More\AIN\single_ain_with_config.py
Examples\More\Config\read_config.py
Examples\More\Config\read_device_name_string.py
Examples\More\Config\write_device_name_string.py
Examples\More\Config\write_power_config.py
Examples\More\DIO\single_dio_read.py
Examples\More\DIO\single_dio_write.py
Examples\More\DIO_EF\dio_ef_config_1_pwm_and_1_counter.py
Examples\More\Ethernet\read_ethernet_config.py
Examples\More\Ethernet\read_ethernet_mac.py
Examples\More\Ethernet\write_ethernet_config.py
Examples\More\I2C\i2c_eeprom.py
Examples\More\List_All\list_all.py
Examples\More\SPI\spi.py
Examples\More\Stream\in_stream_with_non_looping_out_stream.py
Examples\More\Stream\ljm_stream_util.py
Examples\More\Stream\stream_basic.py
Examples\More\Stream\stream_basic_with_stream_out.py
Examples\More\Stream\stream_burst.py
Examples\More\Stream\stream_callback.py
Examples\More\Stream\stream_sequential_ain.py
Examples\More\Stream\stream_triggered.py
Examples\More\Testing\c-r_speed_test.py
Examples\More\Watchdog\read_watchdog_config.py
Examples\More\Watchdog\write_watchdog_config.py
Examples\More\WiFi\read_wifi_config.py
Examples\More\WiFi\read_wifi_mac.py
Examples\More\WiFi\read_wifi_rssi.py
Examples\More\WiFi\write_wifi_config.py
labjack\__init__.py
labjack\ljm\constants.py
labjack\ljm\errorcodes.py
labjack\ljm\ljm.py
labjack\ljm\__init__.py