diff --git a/DHParser/toolkit.py b/DHParser/toolkit.py
index b6a0284d8ec3ff276838d8f975ff5c7c3081a82b..c03303b5b15515acb91c9851dc7e6eff1cf4ef90 100644
--- a/DHParser/toolkit.py
+++ b/DHParser/toolkit.py
@@ -43,9 +43,9 @@ except ImportError:
 import sys
 
 try:
-    from typing import Any, List, Tuple, Collection, Union, Optional
+    from typing import Any, List, Tuple, Iterable, Union, Optional
 except ImportError:
-    from .typing34 import Any, List, Tuple, Collection, Union, Optional
+    from .typing34 import Any, List, Tuple, Iterable, Union, Optional
 
 __all__ = ('logging',
            'is_logging',
@@ -218,7 +218,7 @@ def sv_match(regex, sv: StringView):
     return regex.match(sv.text, pos=sv.begin, endpos=sv.end)
 
 
-def sv_index(absolute_index: Union[int, Collection], sv: StringView) -> Union[int, tuple]:
+def sv_index(absolute_index: Union[int, Iterable], sv: StringView) -> Union[int, tuple]:
     """
     Converts the an index into string watched by a StringView object
     to an index relativ to the string view object, e.g.:
diff --git a/dhparser.py b/dhparser.py
index 0abed9c7b4ee049d709fc067c1678d01692f1906..acf68e540bf4ad3cb39ee72ea29bbb40f7edbad5 100755
--- a/dhparser.py
+++ b/dhparser.py
@@ -147,30 +147,6 @@ else:
 '''
 
 
-def selftest() -> bool:
-    print("DHParser selftest...")
-    print("\nSTAGE I:  Trying to compile EBNF-Grammar:\n")
-    builtin_ebnf_parser = get_ebnf_grammar()
-    ebnf_src = builtin_ebnf_parser.__doc__[builtin_ebnf_parser.__doc__.find('#'):]
-    ebnf_transformer = get_ebnf_transformer()
-    ebnf_compiler = get_ebnf_compiler('EBNF')
-    generated_ebnf_parser, errors, ast = compile_source(ebnf_src, None,
-        builtin_ebnf_parser, ebnf_transformer, ebnf_compiler)
-
-    if errors:
-        print("Selftest FAILED :-(")
-        print("\n\n".join(errors))
-        return False
-    print(generated_ebnf_parser)
-    print("\n\nSTAGE 2: Selfhosting-test: Trying to compile EBNF-Grammar with generated parser...\n")
-    selfhosted_ebnf_parser = compileDSL(ebnf_src, None, generated_ebnf_parser,
-                                        ebnf_transformer, ebnf_compiler)
-    ebnf_compiler.gen_transformer_skeleton()
-    print(selfhosted_ebnf_parser)
-    print("\n\n Selftest SUCCEEDED :-)\n\n")
-    return True
-
-
 def create_project(path,
                    ebnf_tmpl=EBNF_TEMPLATE,
                    readme_tmpl=README_TEMPLATE,
@@ -208,6 +184,30 @@ def create_project(path,
     print('ready.')
 
 
+def selftest() -> bool:
+    print("DHParser selftest...")
+    print("\nSTAGE I:  Trying to compile EBNF-Grammar:\n")
+    builtin_ebnf_parser = get_ebnf_grammar()
+    ebnf_src = builtin_ebnf_parser.__doc__[builtin_ebnf_parser.__doc__.find('#'):]
+    ebnf_transformer = get_ebnf_transformer()
+    ebnf_compiler = get_ebnf_compiler('EBNF')
+    generated_ebnf_parser, errors, ast = compile_source(ebnf_src, None,
+        builtin_ebnf_parser, ebnf_transformer, ebnf_compiler)
+
+    if errors:
+        print("Selftest FAILED :-(")
+        print("\n\n".join(errors))
+        return False
+    print(generated_ebnf_parser)
+    print("\n\nSTAGE 2: Selfhosting-test: Trying to compile EBNF-Grammar with generated parser...\n")
+    selfhosted_ebnf_parser = compileDSL(ebnf_src, None, generated_ebnf_parser,
+                                        ebnf_transformer, ebnf_compiler)
+    ebnf_compiler.gen_transformer_skeleton()
+    print(selfhosted_ebnf_parser)
+    print("\n\n Selftest SUCCEEDED :-)\n\n")
+    return True
+
+
 def cpu_profile(func, repetitions=1):
     import cProfile, pstats
     pr = cProfile.Profile()
diff --git a/examples/LaTeX/tst_LaTeX_docs.py b/examples/LaTeX/tst_LaTeX_docs.py
index e3020131eac994f16f5e7c590e9d899b88975d83..f9e9622e0bfa4ab04af2bb6e20a6e5315554bbc5 100755
--- a/examples/LaTeX/tst_LaTeX_docs.py
+++ b/examples/LaTeX/tst_LaTeX_docs.py
@@ -87,7 +87,7 @@ def mem_profile(func):
         print(stat)
 
 if __name__ == "__main__":
-    mem_profile(tst_func)
+    cpu_profile(tst_func)