Merge pull request #451 from t20100/fix-scientific-notation

Fix scientific notation support

Author: FrancescAlted

numexpr/necompiler.py

@@ -265,7 +265,7 @@ def __str__(self):
 
 _flow_pat = r'[\;\[\:]'
 _dunder_pat = r'__[\w]+__'
-_attr_pat = r'\.\b(?!(real|imag|[eE]?[+-]?\d+)\b)'
+_attr_pat = r'\.\b(?!(real|imag|\d*[eE]?[+-]?\d+)\b)'
 _blacklist_re = re.compile(f'{_flow_pat}|{_dunder_pat}|{_attr_pat}')
 
 def stringToExpression(s, types, context, sanitize: bool=True):

numexpr/tests/test_numexpr.py

@@ -568,6 +568,8 @@ def test_sanitize(self):
             evaluate('a*2e-5')
             evaluate('a*2e+5')
             evaluate('a*2E-5')
+            evaluate('a*2.0e5')
+            evaluate('a*2.2e5')
             evaluate('2.+a')
 
             # pass .real and .imag