• class PrologReader
  • __init__ (self, f)
  • read (self)
  • iter (self)
  • next (self)
  • __next__ (self)

A class for reading input in prolog text format and converting it into transducer(s).

The easiest way to create transducers from prolog files are probably the functionshfst.read_prolog_transducer(f, linecount) andhfst.read_prolog_transducer(f).

An example that reads prolog input from file 'testfile.prolog'and creates the corresponding transducers and prints them. If the input cannot be parsed, a message showing theinvalid line in prolog input is printed and reading is stopped.

with open('testfile.prolog', 'r') as f:    try:        r = hfst.PrologReader(f)        for tr in r:            print(tr)    except hfst.exceptions.NotValidPrologFormatException as e:        print(e.what())

Create a PrologReader that reads input from filef.

• f A python file.

Read next transducer.

Read next transducer description in prolog format and return a corresponding transducer.

• hfst.exceptions.NotValidPrologFormatException
• hfst.exceptions.EndOfStreamException

An iterator to the reader.

Needed for 'for ... in' statement.

for transducer in prolog_reader:    print(transducer)

Return next element (for python version 2).

Needed for 'for ... in' statement.

for transducer in prolog_reader:    print(transducer)

• StopIteration

Return next element (for python version 3).

Needed for 'for ... in' statement.

for transducer in prolog_reader:    print(transducer)

• StopIteration