You must have the pyserial library installed. You do not need the serial library.Therefore, if the serial library is pre-installed, uninstall it. Install the pyserial libray. There are many methods of installing:-
After installing Pyserial, Navigate to the location where pyserial is installed. You will see a "setup.py" file. Open Power Shell or CMD in the same directory and run command "python setup.py install". Now you can use all functionalities of pyserial library without any error.
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I had multiple Python versions installed. Like in Raspberry Pi there was Python3.5 installed and I installed also 3.9.2 without uninstalling 3.5. Then I installed pyserial with pip and tried my program. No module... But the reason was that the linux symbolic link in python3 pointed to python3.9.2 version but pip3 pointed to python3.5. So pyserial was installed in python3.5 and understandably was not found when run python3.9.2. Then I changed symbolic link in pip3 to right version and voila, everything works fine!
Solution:The installation of pip on Windows 7 64 is a little tricky:I added my Python and Python/Scripts path to the PATH env.Then I opened PythonWin as Administrator, ran ez_setup.py from with PythonWin. And then I downloaded pip unpacked it and as Administrator I ran python setup.py install on the windows shell and after that pip install pyserial.
What is not mentioned in other answers but I found very useful to know is that Python 32 bit installs and works fine on Win7 64bit and that means the pyserial installer also works fine.
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When no prefix character is given, native mode is the default. Itpacks or unpacks data based on the platform and compiler on whichthe Python interpreter was built.The result of packing a given C struct includes pad bytes whichmaintain proper alignment for the C types involved; similarly,alignment is taken into account when unpacking. In contrast, whencommunicating data between external sources, the programmer isresponsible for defining byte ordering and padding between elements.See Byte Order, Size, and Alignment for details.
Format strings describe the data layout whenpacking and unpacking data. They are built up from format characters,which specify the type of data being packed/unpacked. In addition,special characters control the byte order, size and alignment.Each format string consists of an optional prefix character whichdescribes the overall properties of the data and one or more formatcharacters which describe the actual data values and padding.
When attempting to pack a non-integer using any of the integer conversioncodes, if the non-integer has a __index__() method then that method iscalled to convert the argument to an integer before packing.
For the 'f', 'd' and 'e' conversion codes, the packedrepresentation uses the IEEE 754 binary32, binary64 or binary16 format (for'f', 'd' or 'e' respectively), regardless of the floating-pointformat used by the platform.
For the 's' format character, the count is interpreted as the length of thebytes, not a repeat count like for the other format characters; for example,'10s' means a single 10-byte string mapping to or from a singlePython byte string, while '10c' means 10separate one byte character elements (e.g., cccccccccc) mappingto or from ten different Python byte objects. (See Examplesfor a concrete demonstration of the difference.)If a count is not given, it defaults to 1. For packing, the string istruncated or padded with null bytes as appropriate to make it fit. Forunpacking, the resulting bytes object always has exactly the specified numberof bytes. As a special case, '0s' means a single, empty string (while'0c' means 0 characters).
The ordering of format characters may have an impact on size in nativemode since padding is implicit. In standard mode, the user isresponsible for inserting any desired padding.Note inthe first pack call below that three NUL bytes were added after thepacked '#' to align the following integer on a four-byte boundary.In this example, the output was produced on a little endian machine:
This module encapsulates the access for the serial port. It providesback-ends for standard Python running on Windows, Linux, BSD (possiblyany POSIX compliant system). The module named "serial" automaticallyselects the appropriate back-end. Tags: Software Development: Python Development, Libraries, Implemented in: implemented-in::python, role::app-data
I followed one of the comments which says " cd catkin_ws/src/rosserial/rosserial_python/src/rosserial_python/SerialClient.py file and on line 356 and 358, I changed it from write_timeout to writeTimeout. That did the trick."
List additional relevant URLs about your project. This is the place to link tobug trackers, source repositories, or where to support package development.The string of the key is the exact text that will be displayed on PyPI.
Set packages to a list of all packages in yourproject, including their subpackages, sub-subpackages, etc. Although thepackages can be listed manually, setuptools.find_packages() finds themautomatically. Use the include keyword argument to find only the givenpackages. Use the exclude keyword argument to omit packages that are notintended to be released and installed.
If your project only runs on certain Python versions, setting thepython_requires argument to the appropriate PEP 440 version specifierstring will prevent pip from installing the project on other Pythonversions. For example, if your package is for Python 3+ only, write:
Although configuring package_data is sufficient for most needs, in somecases you may need to place data files outside of your packages. The data_files directive allows you to do that.It is mostly useful if you need to install files which are used by otherprograms, which may be unaware of Python packages.
When installing packages as egg, data_files is not supported.So, if your project uses setuptools, you must use pipto install it. Alternatively, if you must use python setup.py,then you need to pass the --old-and-unmanageable option.
While serial versioning is very easy to manage as a developer, it is the hardest to trackas an end user, as serial version numbers convey little or no information regarding APIbackwards compatibility.
In other resources you may encounter references to usingpython setup.py register and python setup.py upload. These methodsof registering and uploading a package are strongly discouraged as it mayuse a plaintext HTTP or unverified HTTPS connection on some Python versions,allowing your username and password to be intercepted during transmission.
The reStructuredText parser used on PyPI is not Sphinx!Furthermore, to ensure safety of all users, certain kinds of URLs anddirectives are forbidden or stripped out (e.g., the .. raw::directive). Before trying to upload your distribution, you should checkto see if your brief / long descriptions provided in setup.py arevalid. You can do this by running twine check onyour package files:
You can see if your package has successfully uploaded by navigating to the URL where sampleproject isthe name of your project that you uploaded. It may take a minute or two foryour project to appear on the site.
For MDK, additional software components and support for microcontroller devices is provided by software packs. DFP (Device Family Pack) indicates that a software pack contains support for microcontroller devices.
You should always check for a package in the Linux distro repository first. It is possible the package available may not be the latest version, however, enabling autoupdate will ensure the Linux Agent will always get the latest update. Should you have issues installing from the package managers, you should seek support from the distro vendor.
Enable agent auto update.This version of Debian doesn't have a version >= 2.0.16, therefore AutoUpdate isn't available for it. The output from the above command will show you if the package is up-to-date.
In this article, we explain how to uninstall Python packages using these popular tools and we also introduce you to the ActiveState Platform. The AS Platform is unique in automatically installing and uninstalling transitive dependencies. Our dependency management system makes it possible to track conflicts between packages, know about platform-specific dependencies, and even track system-level dependencies like C and C++ libraries. Once you are done reading, you can try the ActiveState Platform by signing up for a free account.
When you install a package with pip, it also installs all of the dependencies the package requires. Unfortunately, pip does not uninstall dependencies when you uninstall the original package. Here are a couple of different procedures that can be used to uninstall dependencies.
With the Arduino tools installed as I showed above, you get a serial port to use with Arduino when you do a non-boot reset. After the very first upload from Arduino the serial port number may (or, maybe, not) change to a new value, which you will use for all subsequent Arduino activity. 2ff7e9595c
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