I went through many pitfalls when setting up a Windows environment. Here I record the process and some solutions I tried to solve the problems. If possible, it is best to install an Ubuntu system on the machine to run it. 1. Environment (It does not necessarily follow my version of installation, it just provides […]
Tag: python2.7
Install python2.7 and third-party libraries
Install python2.7 and third-party libraries Install python2.7 Open the following .condarc file C:\Users\xx\.condarc In this file add channels: – https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/ – https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/msys2/ – https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/ – https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/ show_channel_urls: true Do not add other channels, otherwise the following error may be reported (base) C:\Users\wu520>conda create -n py27 python=2.7 Collecting package metadata (current_repodata.json): failed UnavailableInvalidChannel: HTTP 404 NOT […]
selenium python2.7 installation configuration
1: Install python python2.7 version (the latest python version is 3.4, but the user experience is not as good as version 2.7, we choose to use version 2.7) Download address: https://www.python.org/download/releases/2.7.8/ Download the Windows x86 MSI Installer (2.7.8) installation package Set system environment variables Execute command verification Enter Python 2: Download and install the setuptools […]
Install python3.x on centos7 (keep python2.7), clone the django project to git and deploy it
Because the built-in version of centos7 is 2.7, when I want to download 3.7 to run a Django project, I always get an error. The main reason is that centos7 always points to 2.7. Here is a summary. The solution is to let python3 and python2 coexist. Table of Contents 1. Install python3.7.x Step 1: […]
[Solved] [ubuntu20.04] The solution to the failure to install python2.7 using the command
Problem description The common method to install python2.7 with online instructions is: sudo apt install python2 After I enter the command, I will be reminded of software dependency related problems, so according to the prompt, use the command in root state: sudo apt -f install It prompts me again: The subprocess of the new python2.7-minimal […]
[Solved] yum running error: /usr/lib64/python2.7/site-packages/pycurl.so: undefined symbol: CRYPTO_num_locks
yum runs an error: /usr/lib64/python2.7/site-packages/pycurl.so: undefined symbol: CRYPTO_num_locks yum running error Log daily error resolution: environment centos7 CentOS Linux release 7.8.2003 (Core) yum running error I don’t know what happened. Suddenly yum can’t be used. I don’t know if it’s because the conda installation environment is rectified or when the environment is uninstalled, the whole […]
[Solved] Alibaba Cloud Effect Flow Add own host to install Python2.7 failure solution
When adding a free host, you need to execute a provided shell script, and you need to install Python 2.7 But installing Python 2.7 has been failing, the solution is as follows Install Python 3.10.4 Python3.10.4 installation tutorial Centos system Create a soft link for Python 3.10.4 as Python ln -s /usr/local/python3/bin/python3 /usr/local/bin/python Upload the […]
[Solved] ImportError: /opt/ros/kinetic/lib/python2.7/dist-packages/cv2.so: undefined symbol: PyCObject_Type
Problem description: Python3 cannot import cv2 after installing ROS Kinetic on Ubuntu16.04 It is understood that in python, the opencv library is called through cv2.so: The principle of Python calling opencv is: opencv compiles a shared library file, and python loads and uses this shared library file as a module. The popular point is that […]