--- contrib/python/hypothesis/py2/hypothesis/internal/reflection.py	(index)
+++ contrib/python/hypothesis/py2/hypothesis/internal/reflection.py	(working tree)
@@ -389,7 +389,7 @@ def extract_lambda_source(f):
         source_bytes = source.encode(encoding)
         source_bytes = source_bytes[lambda_ast.col_offset :].strip()
         source = source_bytes.decode(encoding)
-    except (OSError, TypeError):
+    except (OSError, TypeError, IOError):
         source = source[lambda_ast.col_offset :].strip()
 
     # This ValueError can be thrown in Python 3 if:
--- contrib/python/hypothesis/py2/hypothesis/provisional.py	(index)
+++ contrib/python/hypothesis/py2/hypothesis/provisional.py	(working tree)
@@ -30,6 +30,8 @@ from __future__ import absolute_import, division, print_function
 import os.path
 import string
 
+import importlib_resources
+
 import hypothesis.internal.conjecture.utils as cu
 import hypothesis.strategies._internal.core as st
 from hypothesis.errors import InvalidArgument
@@ -45,16 +47,7 @@ URL_SAFE_CHARACTERS = frozenset(string.ascii_letters + string.digits + "$-_.+!*'
 
 # This file is sourced from http://data.iana.org/TLD/tlds-alpha-by-domain.txt
 # The file contains additional information about the date that it was last updated.
-try:
-    from importlib.resources import read_text  # type: ignore
-except ImportError:
-    # If we don't have importlib.resources (Python 3.7+) or the importlib_resources
-    # backport available, fall back to __file__ and hope we're on a filesystem.
-    f = os.path.join(os.path.dirname(__file__), "vendor", "tlds-alpha-by-domain.txt")
-    with open(f) as tld_file:
-        _tlds = tld_file.read().splitlines()
-else:  # pragma: no cover  # new in Python 3.7
-    _tlds = read_text("hypothesis.vendor", "tlds-alpha-by-domain.txt").splitlines()
+_tlds = importlib_resources.read_text("hypothesis.vendor", "tlds-alpha-by-domain.txt").splitlines()
 assert _tlds[0].startswith("#")
 TOP_LEVEL_DOMAINS = ["COM"] + sorted(_tlds[1:], key=len)