yotta Command not available.

[zfm076]

(1).pip3 install yotta (2).yotta -v The error message is as follows: PS E:\Microbit_Freertos\microbit-samples> yotta -v Traceback (most recent call last): File "c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages\pkg_resources__init.py", line 574, in _build_master ws.require(requires__) File "c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages\pkg_resources__init.py", line 892, in require needed = self.resolve(parse_requirements(requirements)) File "c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages\pkg_resources\init__.py", line 783, in resolve raise VersionConflict(dist, req).with_context(dependent_req) pkg_resources.ContextualVersionConflict: (cryptography 2.3 (c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages), Requirement.parse('cryptography>=2.8'), {'pyOpenSSL'})

During handling of the above exception, another exception occurred:

Traceback (most recent call last): File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\Scripts\yotta-script.py", line 6, in from pkg_resources import load_entry_point File "c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages\pkg_resources__init.py", line 3088, in @_call_aside File "c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages\pkg_resources__init__.py", line 3072, in _call_aside f(*args, **kwargs) File "c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages\pkg_resources__init.py", line 3101, in _initialize_master_working_set working_set = WorkingSet._build_master() File "c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages\pkg_resources\init__.py", line 576, in _build_master return cls._build_from_requirements(requires__) File "c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages\pkg_resources__init.py", line 589, in _build_from_requirements dists = ws.resolve(reqs, Environment()) File "c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages\pkg_resources\init__.py", line 783, in resolve raise VersionConflict(dist, req).with_context(dependent_req) pkg_resources.ContextualVersionConflict: (cryptography 2.3 (c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages), Requirement.parse('cryptography>=2.8'), {'pyOpenSSL'})

(3).then I think the cryptography version is too low. So,I upgrade cryptography:pip3 install yotta --upgrade cryptography. then.There was another mistake: yotta 0.20.0 has requirement cryptography<=2.3,>=2.1.4, but you'll have cryptography 2.8 which is incompatible.

PS E:\HWJ_Microbit_Freertos\microbit-samples> pip3 install yotta --upgrade cryptography Requirement already up-to-date: yotta in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (0.20.0) Collecting cryptography Using cached https://files.pythonhosted.org/packages/2a/e2/c97b90d6dcd9d55c1a9bc4e387c79a10e3b1050e44ae6a79245cab5562fc/cryptography-2.8-cp36-cp36m-win32.whl Requirement not upgraded as not directly required: semantic_version<3,>=2.3.1 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from yotta) (2.8.4) Requirement not upgraded as not directly required: requests[security]<3,>=2.4.3 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from yotta) (2.22.0) Requirement not upgraded as not directly required: certifi>=2016.2.28 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from yotta) (2019.9.11) Requirement not upgraded as not directly required: PyGithub<2,>=1.25 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from yotta) (1.45) Requirement not upgraded as not directly required: colorama<0.4,>=0.3 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from yotta) (0.3.9) Requirement not upgraded as not directly required: hgapi<2,>=1.7 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from yotta) (1.7.4) Requirement not upgraded as not directly required: Jinja2<3,>=2.7.0 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from yotta) (2.10.3) Requirement not upgraded as not directly required: PyJWT<2.0,>=1.0 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from yotta) (1.7.1) Requirement not upgraded as not directly required: pathlib<1.1,>=1.0.1 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from yotta) (1.0.1) Requirement not upgraded as not directly required: jsonschema<3.0,>=2.4.0 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from yotta) (2.6.0) Requirement not upgraded as not directly required: argcomplete<2.0,>=0.8.0 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from yotta) (1.11.0) Requirement not upgraded as not directly required: mbed_test_wrapper<2.0.0,>=0.0.3 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from yotta) (1.0.0) Requirement not upgraded as not directly required: valinor<2.0,>=1.1.4 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from yotta) (1.1.4) Requirement not upgraded as not directly required: intelhex<3.0,>=2.0 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from yotta) (2.2.1) Requirement not upgraded as not directly required: jsonpointer<2.0,>=1.9 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from yotta) (1.14) Requirement not upgraded as not directly required: ntfsutils<0.2,>=0.1.3 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from yotta) (0.1.4) Requirement not upgraded as not directly required: six>=1.4.1 in c:\users\administrator\appdata\roaming\python\python36\site-packages (from cryptography) (1.12.0) Requirement not upgraded as not directly required: cffi!=1.11.3,>=1.8 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from cryptography) (1.13.2) Requirement not upgraded as not directly required: chardet<3.1.0,>=3.0.2 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from requests[security]<3,>=2.4.3->yotta) (3.0.4) Requirement not upgraded as not directly required: urllib3!=1.25.0,!=1.25.1,<1.26,>=1.21.1 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from requests[security]<3,>=2.4.3->yotta) (1.25.3) Requirement not upgraded as not directly required: idna<2.9,>=2.5 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from requests[security]<3,>=2.4.3->yotta) (2.8) Requirement not upgraded as not directly required: pyOpenSSL>=0.14; extra == "security" in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from requests[security]<3,>=2.4.3->yotta) (19.1.0) Requirement not upgraded as not directly required: deprecated in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from PyGithub<2,>=1.25->yotta) (1.2.7) Requirement not upgraded as not directly required: MarkupSafe>=0.23 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from Jinja2<3,>=2.7.0->yotta) (1.1.1) Requirement not upgraded as not directly required: importlib-metadata<2,>=0.23; python_version == "3.6" in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from argcomplete<2.0,>=0.8.0->yotta) (1.3.0) Requirement not upgraded as not directly required: pyyaml<6.0,>=5.1 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from valinor<2.0,>=1.1.4->yotta) (5.3) Requirement not upgraded as not directly required: setuptools in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from valinor<2.0,>=1.1.4->yotta) (39.0.1) Requirement not upgraded as not directly required: pyOCD<1.0,>=0.3 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from valinor<2.0,>=1.1.4->yotta) (0.24.1) Requirement not upgraded as not directly required: project_generator<0.9.0,>=0.8.0 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from valinor<2.0,>=1.1.4->yotta) (0.8.17) Requirement not upgraded as not directly required: pyelftools==0.23 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from valinor<2.0,>=1.1.4->yotta) (0.23) Requirement not upgraded as not directly required: pycparser in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from cffi!=1.11.3,>=1.8->cryptography) (2.19) Requirement not upgraded as not directly required: wrapt<2,>=1.10 in c:\users\administrator\appdata\roaming\python\python36\site-packages (from deprecated->PyGithub<2,>=1.25->yotta) (1.11.1) Requirement not upgraded as not directly required: zipp>=0.5 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from importlib-metadata<2,>=0.23; python_version == "3.6"->argcomplete<2.0,>=0.8.0->yotta) (0.6.0) Requirement not upgraded as not directly required: cmsis-pack-manager>=0.2.7 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from pyOCD<1.0,>=0.3->valinor<2.0,>=1.1.4->yotta) (0.2.9) Requirement not upgraded as not directly required: pywinusb>=0.4.0; platform_system == "Windows" in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from pyOCD<1.0,>=0.3->valinor<2.0,>=1.1.4->yotta) (0.4.2) Requirement not upgraded as not directly required: intervaltree<4.0,>=3.0.2 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from pyOCD<1.0,>=0.3->valinor<2.0,>=1.1.4->yotta) (3.0.2) Requirement not upgraded as not directly required: pyusb<2.0,>=1.0.0b2 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from pyOCD<1.0,>=0.3->valinor<2.0,>=1.1.4->yotta) (1.0.2) Requirement not upgraded as not directly required: prettytable in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from pyOCD<1.0,>=0.3->valinor<2.0,>=1.1.4->yotta) (0.7.2) Requirement not upgraded as not directly required: argparse in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from project_generator<0.9.0,>=0.8.0->valinor<2.0,>=1.1.4->yotta) (1.4.0) Requirement not upgraded as not directly required: xmltodict in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from project_generator<0.9.0,>=0.8.0->valinor<2.0,>=1.1.4->yotta) (0.12.0) Requirement not upgraded as not directly required: project_generator_definitions<0.3.0,>=0.2.2 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from project_generator<0.9.0,>=0.8.0->valinor<2.0,>=1.1.4->yotta) (0.2.40) Requirement not upgraded as not directly required: more-itertools in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from zipp>=0.5->importlib-metadata<2,>=0.23; python_version == "3.6"->argcomplete<2.0,>=0.8.0->yotta) (8.0.2) Requirement not upgraded as not directly required: appdirs>=1.4 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from cmsis-pack-manager>=0.2.7->pyOCD<1.0,>=0.3->valinor<2.0,>=1.1.4->yotta) (1.4.3) Requirement not upgraded as not directly required: milksnake>=0.1.2 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from cmsis-pack-manager>=0.2.7->pyOCD<1.0,>=0.3->valinor<2.0,>=1.1.4->yotta) (0.1.5) Requirement not upgraded as not directly required: sortedcontainers<3.0,>=2.0 in c:\users\administrator\appdata\local\programs\python\python36-32\lib\site-packages (from intervaltree<4.0,>=3.0.2->pyOCD<1.0,>=0.3->valinor<2.0,>=1.1.4->yotta) (2.1.0) yotta 0.20.0 has requirement cryptography<=2.3,>=2.1.4, but you'll have cryptography 2.8 which is incompatible. Installing collected packages: cryptography Found existing installation: cryptography 2.3 Uninstalling cryptography-2.3: Successfully uninstalled cryptography-2.3 Successfully installed cryptography-2.8 PS E:\Microbit_Freertos\microbit-samples>

(4)I don't know how to make my yotta work anymore.Do you have any ideas?

[zfm076]

I solved the problem by: pip3 install pyOpenSSL==19.0.0

[zfm076]

But,Other problems arose:

PS E:\Microbit_Freertos\microbit-samples> yt clean PS E:\Microbit_Freertos\microbit-samples> yt build info: get versions for bbc-microbit-classic-gcc info: download bbc-microbit-classic-gcc@0.2.3 from the public module registry info: get versions for mbed-gcc info: download mbed-gcc@0.1.3 from the public module registry warning: The build target has not been set, so the default (bbc-microbit-classic-gcc,*) is being used. You can use yotta target <targetname> to set the build target. See http://docs.yottabuild.org/tutorial/targets.html for more information on using targets. info: get versions for microbit error: maximum recursion depth exceeded in comparison PS E:\Microbit_Freertos\microbit-samples>

[zfm076]

But,Other problems arose:

PS E:\Microbit_Freertos\microbit-samples> yt clean PS E:\Microbit_Freertos\microbit-samples> yt build info: get versions for bbc-microbit-classic-gcc info: download bbc-microbit-classic-gcc@0.2.3 from the public module registry info: get versions for mbed-gcc info: download mbed-gcc@0.1.3 from the public module registry warning: The build target has not been set, so the default (bbc-microbit-classic-gcc,*) is being used. You can use yotta target <targetname> to set the build target. See http://docs.yottabuild.org/tutorial/targets.html for more information on using targets. info: get versions for microbit error: maximum recursion depth exceeded in comparison PS E:\Microbit_Freertos\microbit-samples>

The reason is that the network is bad, so it takes too long to get versions for microbit.