Fix collections ABCs deprecation warning

1 files changed, 12 insertions, 3 deletions

diff --git a/pyparsing.py b/pyparsing.py
index e8aefc8..800ddd9 100644
--- a/pyparsing.py
+++ b/pyparsing.py
@@ -83,6 +83,15 @@ except ImportError:
     from threading import RLock

 

 try:

+    # Python 3

+    from collections.abc import Iterable

+    from collections.abc import MutableMapping

+except ImportError:

+    # Python 2.7

+    from collections import Iterable

+    from collections import MutableMapping

+

+try:

     from collections import OrderedDict as _OrderedDict

 except ImportError:

     try:

@@ -940,7 +949,7 @@ class ParseResults(object):
     def __dir__(self):

         return (dir(type(self)) + list(self.keys()))

 

-collections.MutableMapping.register(ParseResults)

+MutableMapping.register(ParseResults)

 

 def col (loc,strg):

     """Returns current column within a string, counting newlines as line separators.

@@ -3242,7 +3251,7 @@ class ParseExpression(ParserElement):
 

         if isinstance( exprs, basestring ):

             self.exprs = [ ParserElement._literalStringClass( exprs ) ]

-        elif isinstance( exprs, collections.Iterable ):

+        elif isinstance( exprs, Iterable ):

             exprs = list(exprs)

             # if sequence of strings provided, wrap with Literal

             if all(isinstance(expr, basestring) for expr in exprs):

@@ -4583,7 +4592,7 @@ def oneOf( strs, caseless=False, useRegex=True ):
     symbols = []

     if isinstance(strs,basestring):

         symbols = strs.split()

-    elif isinstance(strs, collections.Iterable):

+    elif isinstance(strs, Iterable):

         symbols = list(strs)

     else:

         warnings.warn("Invalid argument to oneOf, expected string or iterable",