How to install or upgrade Python 2.7 under Linux

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1. Prepare the compilation environment gcc

2. Go to the official website to download the source code of the corresponding version of python to be installed

Download address: https://www.python.org/downloads/source/

You can choose the version you want to download and use the wget command to download the corresponding source code

3. Unzip the downloaded code package

tar -zxvf Python-x.x.x.tgz
cd Python-x.x.x

4. Configuration

1) Find the configure file

find . -name configure
cd 搜索结果（一般就在Python文件根目录下）

2) Configure

./configure

5. Compile

make
make install

(If there are no other special requirements, the installation ends here. Enter pythonx.x to enter your The python development environment just installed)

6. Replace the previous default version of python (create a new soft connection)

cd /usr/bin/
rm -rf python
ln -s /usr/local/Python-x.x.x/bin/python ./python

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