fixes #405 where old versions of numpy are not supported

Author: seperman

deepdiff/diff.py

@@ -655,7 +655,6 @@ def _compare_in_order(
         Default compare if `iterable_compare_func` is not provided.
         This will compare in sequence order.
         """
-
         if t1_from_index is None:
             return [((i, i), (x, y)) for i, (x, y) in enumerate(
                 zip_longest(

deepdiff/helper.py

@@ -108,6 +108,40 @@ class pydantic_base_model_type:
 
 NUMERICS = frozenset(string.digits)
 
+
+def _int_or_zero(value):
+    """
+    Tries to extract some number from a string.
+
+    12c becomes 12
+    """
+    try:
+        return int(value)
+    except Exception:
+        result = []
+        for char in value:
+            if char in NUMERICS:
+                result.append(char)
+        if result:
+            return int(''.join(result))
+        return 0
+
+
+def get_semvar_as_integer(version):
+    """
+    Converts:
+
+    '1.23.5' to 1023005
+    """
+    version = version.split('.')
+    if len(version) > 3:
+        version = version[:3]
+    elif len(version) < 3:
+        version.extend(['0'] * (3 - len(version)))
+
+    return sum([10**(i * 3) * _int_or_zero(v) for i, v in enumerate(reversed(version))])
+
+
 # we used to use OrderedDictPlus when dictionaries in Python were not ordered.
 dict_ = dict
 
@@ -120,6 +154,10 @@ class pydantic_base_model_type:
 
 pypy3 = py3 and hasattr(sys, "pypy_translation_info")
 
+
+if get_semvar_as_integer(np.__version__) < 1019000:
+    sys.exit('The minimum required Numpy version is 1.19.0. Please upgrade your Numpy package.')
+
 strings = (str, bytes)  # which are both basestring
 unicode_type = str
 bytes_type = bytes
@@ -321,8 +359,8 @@ def type_in_type_group(item, type_group):
 
 def type_is_subclass_of_type_group(item, type_group):
     return isinstance(item, type_group) \
-           or (isinstance(item, type) and issubclass(item, type_group)) \
-           or type_in_type_group(item, type_group)
+        or (isinstance(item, type) and issubclass(item, type_group)) \
+        or type_in_type_group(item, type_group)
 
 
 def get_doc(doc_filename):

tests/test_helper.py

@@ -10,6 +10,7 @@
     not_found, OrderedSetPlus, diff_numpy_array, cartesian_product_numpy,
     get_truncate_datetime, datetime_normalize,
     detailed__dict__, ENUM_INCLUDE_KEYS, add_root_to_paths,
+    get_semvar_as_integer,
 )
 
 
@@ -297,3 +298,14 @@ def test_detailed__dict__(self, obj, include_keys, expected):
     def test_add_root_to_paths(self, test_num, value, expected):
         result = add_root_to_paths(value)
         assert expected == result, f"test_add_root_to_paths #{test_num} failed."
+
+    @pytest.mark.parametrize('test_num, value, expected', [
+        (1, '1.2.3', 1002003),
+        (2, '1.22.3', 1022003),
+        (3, '1.22.3c', 1022003),
+        (4, '2.4', 2004000),
+        (5, '1.19.0', 1019000),
+    ])
+    def test_get_semvar_as_integer(self, test_num, value, expected):
+        result = get_semvar_as_integer(value)
+        assert expected == result, f"test_get_semvar_as_integer #{test_num} failed."