idf.py can't works

[Mowitra]

sir why it shows this type of errors

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PS C:\ESP_IDF\eg1> idf.py
idf.py : The term 'idf.py' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or
if a path was included, verify that the path is correct and try again.
At line:1 char:1

• idf.py

•   + CategoryInfo          : ObjectNotFound: (idf.py:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException
  
  

[Mair]

try the IDF termainal