Sublime Text3 Click Ctrl+b can't run python program?

1. Open Sublime Text 3, select Tools-->build system-->new Build System ....

2, copy the following code block into the new file, and named Python.sublime-build, save (the default directory can be)

{      "cmd": ["python","- u","$file"],    "File_regex":"^[]*file \ "(... *?) \ ", line ([0-9]*)",    "selector":"Source.python",    "encoding":"950"Remember to change the endocding and the encoding in the command prompt as in the native Cmd property, such as:936.

Note: The python path must be configured under the PATH environment variable, if necessary.

Sublime Text3 Click Ctrl+b can't run python program?