In ArcGIS Pro versions 1.0 through 1.2, if Python is used outside of ArcGIS Pro, it is required to install Python for ArcGIS Pro. Use the Python tab in the ArcGIS Pro settings to check the version of those packages. Many other packages are also included with the Python environment. In the image below (ArcGIS Pro 2.5), the version of Python is 3.6.9, followed by the versions of the Matplotlib, NumPy, and SciPy packages. The commands display the default Python version used with the application. The version of Python and its stack versions can be determined by opening the Python window in the application by clicking View > Python, and typing the following commands: It is not supported to replace the version of Python that ships with ArcGIS Server. Using a different version of Python can lead to compatibility issues and root folder problems. It is not recommended to install an independent version of Python for use in ArcGIS Desktop. The version of NumPy and Matplotlib is included with the Python environment in the most recent releases. ArcGIS installs the versions of Python listed below. It is incorporated into the setups of ArcGIS Desktop, ArcGIS Pro, and ArcGIS Enterprise. The Python programming language has been used in each version since ArcGIS 9.0.

Current version of python