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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def write_py(self):
 """Writes a python module file to the current working directory for the library. """

        self._check_dir()
        #We make it so that the write py method can be called independently (as opposed
        #to first needing the F90 write method to be called).
        self._find_executables()
        
        lines = []
        lines.append('"""Auto-generated python module for interaction with Fortran shared library\n'
                     'via ctypes. Generated for module {}.\n'.format(self.module.name) +
                     '"""')
        lines.append("from ctypes import *")
        lines.append("from ftypes import *")
        lines.append("from numpy.ctypeslib import load_library, ndpointer")
        lines.append("from numpy import require")
        lines.append("from os import path")
        lines.append("")
        
        for execkey in self.uses:
            self._write_executable_py(execkey, lines)

        from os import path
        pypath = path.join(self.dirpath, "{}.py".format(self.module.name.lower()))
        with open(pypath, 'w') as f:
            f.write('\n'.join(lines))