python Installation failed: Service Pack 1 is required to continue installation

Solution:

By looking at the log file is the last line:
Service Pack 1 IS required to the Continue Installation

Download the official website Pack 1 Service
https://www.microsoft.com/zh-CN/download/details.aspx?id=5842

download

Installation Instructions:
1. Click the "Download" button on this page to start the download
2. Copy the download to your computer for later installation, click "Save" or "Save this program to disk."
To start the installation immediately, click "Open" or "Run this program from its current location."

Download Instructions:

7601.17514.101119-1850_Update_Sp_Wave1-GRMSP1.1_DVD.iso - This DVD image contains a separate update all architectures.

windows6.1-KB976932-X86.exe - Sp1 application installed on the 32-bit computers running Windows 7.

windows6.1-KB976932-X64.exe - This application will run Sp1 installed on Windows 7 or Windows Server 2008 R2 64-bit computer.

windows6.1-KB976932-IA64.exe - 此应用程序将 Sp1 安装到 Itanium 64 位 Windows Server 2008 R2。
Windows_Win7SP1.7601.17514.101119-1850.X86FRE.Symbols.msi - 适用于 32 位计算机的独立调试符号（未检验版本）。
Windows_Win7SP1.7601.17514.101119-1850.X86CHK.Symbols.msi - 适用于 32 位计算机的独立调试符号（已检验版本）
Windows_Win7SP1.7601.17514.101119-1850.AMD64FRE.Symbols.msi - 适用于 64 位计算机的独立调试符号（未检验版本）。这包含适用于 Windows 7 SP1 和 Windows Server 2008 R2 SP1 的调试符号。
Windows_Win7SP1.7601.17514.101119-1850.AMD64CHK.Symbols.msi - 适用于 64 位计算机的独立调试符号（已检验版本）。这包含适用于 Windows 7 SP1 和 Windows Server 2008 R2 SP1 的调试符号。
Windows_Win7SP1.7601.17514.101119-1850.IA64FRE.Symbols.msi - 适用于 Itanium 64 位计算机的独立调试符号（未检验版本）。
Windows_Win7SP1.7601.17514.101119-1850.IA64CHK.Symbols.msi - 适用于 Itanium 64 位计算机的独立调试符号（已检验版本）。

安装完成后: