Hostwinds Seattle VPS in the United States, how to install CentOS 8 system Python3 tutorial

Hostwinds VPS is still used by many users in mainland China, mainly because it can change IP for free, and the access speed of the Seattle data center in mainland China is still good. In the first few months of this year, Hostwinds also launched Chinese-specific domain names and Chinese web pages are also more convenient for mainland Chinese users to purchase. This article records the method of installing Python 3 on the CentOS 8 operating system on Hostwinds VPS. In comparison, it is more convenient to install things on the Ubuntu system. There are currently two ways to install Python on CentOS 8. The first is to install it through the dnf package management tool, which seems to only be able to install Python 3.6. The second is to compile and install it yourself. You can install the latest Python 3.9. You can install it according to your own needs. Choose according to your needs.

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Preparations before installation

1. Log in to the SSH connection. This should go without saying, everyone knows it.

2. Update system

sudo yum update

CentOS 8 installation Python 3.9 tutorial

1. Download the necessary dependency packages

sudo dnf groupinstall 'development tools' sudo dnf install wget openssl-devel bzip2-devel libffi-devel

2. Download the Python 3.9 installation package

sudo curl https://www.python.org/ftp/python/3.9.1/Python-3.9.1.tgz -O

3. Unzip the Python 3.9 installation package

tar -xvf Python-3.9.1.tgz

4. Enter the Python 3.9 file directory

cdPython-3.9.1

5. Run the configuration script and compilation script to install

sudo ./configure --enable-optimizations sudo make install

Note:

If Python has been installed in /usr/bin/python or /usr/bin/python3, you should use sudo make altinstall to install it.

6. Check whether the installation is successful

python3 -V

If the Python version number is successfully output, the installation is successful:

Python 3.9.1

CentOS 8 installation Python 3.6 tutorial

The above process of installing Python 3.9 is actually a bit cumbersome, because the current dnf of CentOS 8 only supports Python 3.6. If we only needed Python 3.6, the problem would be much simpler.

The following describes how to install Python 3.6.

1. Directly use the dnf package management tool to install

sudo dnf install python3

2. Check whether the installation is successful

python3 -V

Yes, it's that simple.

Note:

If Python 3.9 is installed through compilation, the installation path is /usr/local/bin/python3. If Python 3 is installed through CentOS dnf, the installation path is /usr/bin/python3.

CentOS 8 installation Python 2 tutorial

Finally, let me briefly talk about how to install Python 2. At present, Python 2 has officially stopped supporting it. In fact, it is not recommended to continue using it. You can still install it if necessary.

Python 2 installation is also very simple, just one command:

sudo dnf install python2

Hostwinds recommends the entry-level plan for beginners as follows. After the recent price adjustment, the price of the hosting plan has increased a lot compared to before. In fact, the price has not changed much. It can only be said that the discount is not as big as before.

CPU Memory harddisk flow bandwidth Hosted type (after 25% discount) Buy Unmanaged Buy

1 core	1GB	30GB	1TB	1Gbps	$8.24/month	Buy	$4.99/month	Buy
1 core	2GB	50GB	2TB	1Gbps	$16.49/month	Buy	$9.99/month	Buy
2 cores	4GB	75GB	2TB	1Gbps	$29.99/month	Buy	$18.99/month	Buy
2 cores	6GB	100GB	2TB	1Gbps	$38.24/month	Buy	$28.99/month	Buy
4 cores	8GB	150GB	3TB	1Gbps	$59.99/month	Buy	$38.99 per month	Buy
4 cores	12GB	200GB	4TB	1Gbps	$74.99/month	Buy	$49.99/month	Buy
6 cores	16GB	300GB	5TB	1Gbps	$110.24/month	Buy	$76.99/month	Buy
8 cores	32GB	400GB	6TB	1Gbps	$168.74/month	Buy	$124.99/month	Buy
12 cores	64GB	500GB	8TB	1Gbps	$274.49/month	Buy	$214.99/month	Buy
16 cores	96GB	750GB	9TB	1Gbps	$395.24/month	Buy	$328.99/month	Buy

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