How to Fix 'fatal error: Python.h: No such file or directory' When Building C Extensions?

Troubleshoot "fatal error: Python.h: No such file or directory" in Building C Extensions

When attempting to build a shared library with a C extension, one may encounter the following error:

utilsmodule.c:1:20: fatal error: Python.h: No such file or directory
compilation terminated.
````

Addressing this error requires verifying the installation of Python header files and static libraries for development (dev). Depending on the operating system, the appropriate package manager should be employed for installation.

**Package Managers:**

* **apt (Ubuntu, Debian)**
  * `sudo apt-get install python-dev` (for python2.x)
  * `sudo apt-get install python3-dev` (for python3.x)

* **yum (CentOS, RHEL)**
  * `sudo yum install python-devel` (for python2.x)
  * `sudo yum install python3-devel` (for python3.x)

* **dnf (Fedora)**
  * `sudo dnf install python2-devel` (for python2.x)
  * `sudo dnf install python3-devel` (for python3.x)

* **zypper (openSUSE)**
  * `sudo zypper in python-devel` (for python2.x)
  * `sudo zypper in python3-devel` (for python3.x)

* **apk (Alpine)**
  * `sudo apk add python2-dev` (for python2.x)
  * `sudo apk add python3-dev` (for python3.x)

* **apt-cyg (Cygwin)**
  * `apt-cyg install python-devel` (for python2.x)
  * `apt-cyg install python3-devel` (for python3.x)

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