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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 _remove_dependency(self, dependlist, i, isSubroutine, anexec):
 """Removes the specified dependency from the executable if it exists and matches the call signature."""

        if dependlist[i] in anexec.dependencies:
            all_depends = anexec.dependencies[dependlist[i]]
            if len(all_depends) > 0:
                clean_args = all_depends[0].clean(dependlist[i + 1])
                for idepend in range(len(all_depends)):
                    #Make sure we match across all relevant parameters
                    if (all_depends[idepend].argslist == clean_args
                        and all_depends[idepend].isSubroutine == isSubroutine):
                        del anexec.dependencies[dependlist[i]][idepend]
                        #We only need to delete one, even if there are multiple
                        #identical calls from elsewhere in the body.
                        break