law: Code of Criminal Procedure Act, 1973
  375.No appeal in certain cases when accused
  
  pleads guilty.-
  Notwithstanding anything contained in section
  
  374, where an accused person has pleaded guilty and has been convicted on such
  
  plea, there shall be no appeal,-
  (a) if the conviction is by a High Court; or
  (b) if the conviction is by a Court of Session, Metropolitan Magistrate or
  
  Magistrate of the first or second class, except as to the extent or legality of
  
  the sentence.