1. Problem Description:
When installing a package with PIP, an error message is displayed_ 2to3 is invalid
For example, when I install concurrentloghandler = = 0.9.1, the following error is reported
2. Solution
Reduce the version of setuptools to 57.5
pip install setuptools==57.5.0
Error message:
When learning the book machine learning practice, I ran according to the code in the book and made an error, but there was no error prompt in the code. The error codes are as follows:
firstStr = myTree.keys()[0]
print('树的叶子结点个数为：\n{}'.format(getNumLeafs(myTree)))
Errors are reported as follows:
firstStr = myTree.keys()[0]
TypeError: 'dict_keys' object does not support indexing
Type error: Dict_Keys object does not support indexing
The error is caused by different versions. The author uses version 2.X, while I use version 3.7.X.
Solution
For version 3.x, because python3 changed dict.keys, which returns a dict_keys object that supports iterable but not indexable, we can explicitly convert it to a list
Modify the error code as follows:
firstSides = list(myTree.keys())
firstStr = firstSides[0]
# or
firstStr = list(myTree.keys())[0]
Just run it now.
Originally, I wanted to download the requests module. As a result, PIP reported an error during installation. After solving the error problem, I installed the requests module to verify whether the problem was successfully solved
1. Failed to install the third-party library for pip
PIP failed to install the third-party library: warning: you are using PIP version 20.2.3; however, version 20.2.4 is available.
You should consider upgrading via the ‘c:\users\lenovo\appdata\local\programs\python\python37\python.exe -m pip install –upgrade pip’ command.
Cause: the installation of the third-party library failed because the PIP version is too low.
solution:
Enter: easy in CMD_install -U pip
————————————————
Error message:
When learning the book machine learning practice, I ran according to the code in the book and made an error, but there was no error prompt in the code. The error codes are as follows:
if type(secondDict[key])._name_ == 'dict':
Errors are reported as follows:
AttributeError: type object 'str' has no attribute '_name_'
Attribute error: the type object “STR” has no attribute “name”,
The error is caused by different versions. The author uses version 2. X, while I use version 3.7. X.
Solution
The type object “STR” in Python 3 does not have the “_name_” attribute, so we need to remove the attribute. In addition, this judgment statement was originally used to judge whether the node type is dict (Dictionary), but because the single quotation mark (”) is added, it becomes a string, which will cause other errors, so we also need to remove the single quotation mark.
Modify the error code as follows:
if type(secondDict[key]) == dict:
Just run it now.
Error Messages:
ERROR: Could not install packages due to an OSError: HTTPSConnectionPool(host=’files.pythonhosted.org’, port=443): Max retries exceeded with url: /packages/ad/24/39cab5fbaf425ff522e1e51cce79f94f10f9523f015d2b2251e43f45e8a2/selenium-4.0.0-py3-none-any.whl (Caused by ConnectTimeoutError(<pip._vendor.urllib3.connection.HTTPSConnection object at 0x000001BEAD0A2E88>, ‘Connection to files.pythonhosted.org timed out. (connect timeout=15)’))
D:\software\python\pip-21.3.1\pip-21.3.1>pip install selenium-4.0.0-py3-none-any.whl
WARNING: Requirement ‘selenium-4.0.0-py3-none-any.whl’ looks like a filename, but the file does not exist
Processing d:\software\python\pip-21.3.1\pip-21.3.1\selenium-4.0.0-py3-none-any.whl
ERROR: Could not install packages due to an OSError: [Errno 2] No such file or directory: ‘D:\\software\\python\\pip-21.3.1\\pip-21.3.1\\selenium-4.0.0-py3-none-any.whl’
Solution:
pip install torchtext
Continue after installation Install selenium
pip install selenium
In this case, you can also find batch_ When the size is 1, no error will be reported,
batch_ If the size is greater than 1, an error will be reported because the dimensions of entries in the same batch are different
For example, batch = [[2,3,5,1], [3,4,5,2,3]]
Solution:
Make up to the same length
# Complement the length of all vectors to max_length multi = np.pad(multi, (0, max_length-multi.shape[0]), 'constant', constant_values=(0, 0))
Note that in the dataset class__get__Supplement in item() method
Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/robotide/application/application.py", line 62, in OnInit self.plugin_loader.enable_plugins() File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/robotide/application/pluginloader.py", line 43, in enable_plugins p.enable_on_startup() File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/robotide/application/pluginconnector.py", line 52, in enable_on_startup self.enable() File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/robotide/application/pluginconnector.py", line 57, in enable self._plugin.enable() File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/robotide/recentfiles/recentfiles.py", line 44, in enable self._add_recent_files_to_menu() File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/robotide/recentfiles/recentfiles.py", line 114, in _add_recent_files_to_menu self.register_action(action) File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/robotide/pluginapi/plugin.py", line 204, in register_action action = self._frame.actions.register_action(action_info) File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/robotide/ui/mainframe.py", line 751, in register_action self._menubar.register(action) File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/robotide/ui/actiontriggers.py", line 60, in register menu.add_menu_item(action) File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/robotide/ui/actiontriggers.py", line 98, in add_menu_item menu_item = self._construct_menu_item(action) File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/robotide/ui/actiontriggers.py", line 107, in _construct_menu_item menu_item = self._create_menu_item(action) File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/robotide/ui/actiontriggers.py", line 139, in _create_menu_item pos = action.get_insertion_index(self.wx_menu) File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/robotide/action/action.py", line 40, in get_insertion_index return self._insertion_point.get_index(menu) File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/robotide/action/actioninfo.py", line 286, in get_index index = self._find_position_in_menu(menu) File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/robotide/action/actioninfo.py", line 296, in _find_position_in_menu if self._get_menu_item_name(item).lower() == self._item.lower(): File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/robotide/action/actioninfo.py", line 301, in _get_menu_item_name return self._shortcut_remover.split(item.GetLabel())[0] AttributeError: 'MenuItem' object has no attribute 'GetLabel' OnInit returned false, exiting... Error in atexit._run_exitfuncs: wx._core.wxAssertionError: C++ assertion "GetEventHandler() == this" failed at /Users/robind/projects/bb2/dist-osx-py38/build/ext/wxWidgets/src/common/wincmn.cpp(475) in ~wxWindowBase(): any pushed event handlers must have been removed
Solution:
python3.9 can install beta version
pip install -U –pre robotframework-ride
It will start normally after you had installed it.
Error Message:
Error: module ‘jsonpath’ has no attribute ‘jsonpath’
Reason:
/library/frameworks/python.framework/versions/3.7/bin/jsonpath.py was called
Solution:
Rename the jsonpath.py file in this path to jsonpath1.py
Technical background
In the last blog post, I performed the update of CONDA and installed gxx with CONDA_After linux-64, when some PIP instructions are executed, the following error messages will be given:
$ python3 -m pip list
Traceback (most recent call last):
File "/home/dechin/anaconda3/lib/python3.8/runpy.py", line 194, in _run_module_as_main
return _run_code(code, main_globals, None,
File "/home/dechin/anaconda3/lib/python3.8/runpy.py", line 87, in _run_code
exec(code, run_globals)
File "/home/dechin/anaconda3/lib/python3.8/site-packages/pip/__main__.py", line 29, in <module>
from pip._internal.cli.main import main as _main
File "/home/dechin/anaconda3/lib/python3.8/site-packages/pip/_internal/cli/main.py", line 9, in <module>
from pip._internal.cli.autocompletion import autocomplete
File "/home/dechin/anaconda3/lib/python3.8/site-packages/pip/_internal/cli/autocompletion.py", line 10, in <module>
from pip._internal.cli.main_parser import create_main_parser
File "/home/dechin/anaconda3/lib/python3.8/site-packages/pip/_internal/cli/main_parser.py", line 8, in <module>
from pip._internal.cli import cmdoptions
File "/home/dechin/anaconda3/lib/python3.8/site-packages/pip/_internal/cli/cmdoptions.py", line 23, in <module>
from pip._internal.cli.parser import ConfigOptionParser
File "/home/dechin/anaconda3/lib/python3.8/site-packages/pip/_internal/cli/parser.py", line 12, in <module>
from pip._internal.configuration import Configuration, ConfigurationError
File "/home/dechin/anaconda3/lib/python3.8/site-packages/pip/_internal/configuration.py", line 27, in <module>
from pip._internal.utils.misc import ensure_dir, enum
File "/home/dechin/anaconda3/lib/python3.8/site-packages/pip/_internal/utils/misc.py", line 42, in <module>
from pip._internal.locations import get_major_minor_version, site_packages, user_site
File "/home/dechin/anaconda3/lib/python3.8/site-packages/pip/_internal/locations/__init__.py", line 9, in <module>
from . import _distutils, _sysconfig
File "/home/dechin/anaconda3/lib/python3.8/site-packages/pip/_internal/locations/_distutils.py", line 18, in <module>
from .base import get_major_minor_version
File "/home/dechin/anaconda3/lib/python3.8/site-packages/pip/_internal/locations/base.py", line 14, in <module>
site_packages = sysconfig.get_path("purelib") # type: typing.Optional[str]
File "/home/dechin/anaconda3/lib/python3.8/sysconfig.py", line 521, in get_path
return get_paths(scheme, vars, expand)[name]
File "/home/dechin/anaconda3/lib/python3.8/sysconfig.py", line 511, in get_paths
return _expand_vars(scheme, vars)
File "/home/dechin/anaconda3/lib/python3.8/sysconfig.py", line 172, in _expand_vars
_extend_dict(vars, get_config_vars())
File "/home/dechin/anaconda3/lib/python3.8/sysconfig.py", line 559, in get_config_vars
_init_posix(_CONFIG_VARS)
File "/home/dechin/anaconda3/lib/python3.8/sysconfig.py", line 430, in _init_posix
_temp = __import__(name, globals(), locals(), ['build_time_vars'], 0)
ModuleNotFoundError: No module named '_sysconfigdata_x86_64_conda_linux_gnu'
Problem location and solution
After a round of searching, the cause of the problem is finally located as: a backup file is lost in a certain version of Python. Usually, there are two identical in the same version of Python_ sysconfigdata_ x86_ 64_ conda_ cos6_ linux_ GNU. Py files and _ sysconfigdata_ x86_ 64_ conda_ linux_ GNU. Py file. Some programs depend on one of them during operation, so what we need to do is to retrieve whether these two files exist in the system:
$ sudo find ~ -name _sysconfigdata_x86_64*
[sudo] dechin password is:
/home/dechin/anaconda3/lib/python3.8/_sysconfigdata_x86_64_apple_darwin13_4_0.py
/home/dechin/anaconda3/lib/python3.8/__pycache__/_sysconfigdata_x86_64_apple_darwin13_4_0.cpython-38.pyc
/home/dechin/anaconda3/lib/python3.8/_sysconfigdata_x86_64_conda_cos6_linux_gnu.py
Here we find that there is only one under the file without Python 3.8 Path currently used_sysconfigdata_x86_64_conda_cos6_linux_GNU.Py_sysconfigdata_x86_64_conda_linux_Gnu.py file, so we only need to make a copy of the file:
$ cp /home/dechin/anaconda3/lib/python3.8/_sysconfigdata_x86_64_conda_cos6_linux_gnu.py /home/dechin/anaconda3/lib/python3.8/_sysconfigdata_x86_64_conda_linux_gnu.py
At this time, execute the PIP instruction again:
$ python3 -m pip listPackage Version
---------------------------------- -----------------
absl-py 0.13.0
adamod 0.0.3
affinity 0.1.0
alabaster 0.7.12
anaconda-client 1.8.0
anaconda-navigator 1.10.0
anaconda-project 0.10.1
anyio 2.2.0
...
Successful operation, problem solved.
Summary summary
In the recent version update of CONDA, the files under the path may be deleted_sysconfigdata_x86_64_conda_linux_GNU module related backup file, which may be relied on during the operation of some other software, which will lead to the problem that the error module cannot be found during the operation. Finally, we solved the problem by copying and backing up the file again.
Solution:
Run CMD as Administrator
Use command: pip install https://github.com/pyinstaller/pyinstaller/archive/develop.tar.gz
Re-execute: Python – M PIP install — upgrade pip
Just run the code again