Merge operation using PySVN package - what could be the problem?

Question

Python

There is a branch https:/svn.somewhere.org/my_project/branches/1.0
I merge through the command line "svn merge https:/svn.somewhere.org/my_project/trunk"
Everything is fine, everything works.
There was a need to use the PySVN package for automatic merge.
Found an example, but, unfortunately, it does not work, as if I were doing the operation via cmd

def merge_to_wc(r):
  WC_PATH = '.'
  FROM_URL = 'https:/svn.somewhere.org/my_project/branches/1.0'

  pysvn.merge_peg(
    FROM_URL,
    pysvn.Revision(pysvn.opt_revision_kind.number, r-1),
    pysvn.Revision(pysvn.opt_revision_kind.number, r),
    pysvn.Revision(pysvn.opt_revision_kind.head),
    WC_PATH)

When performing the operation, it swears that there are conflicts, although they actually do not exist.