Create is_numeric.py

Author: Amogh Singhal

is_numeric.py

@@ -0,0 +1,62 @@
+# Given a string, return True if it
+# is a numeric data type, False otherwise
+
+def is_numeric(input_str):
+
+  data_types = [int, float, complex,
+  lambda T: int(T, 2), # binary
+  lambda T: int(T, 8), # octal
+  lambda T: int(T, 16) # hex
+  ]
+
+  for dtype in data_types:
+    try:
+      dtype(input_str)
+      return True
+    except ValueError:
+      pass
+  return False
+
+tests = [
+    '0', '0.', '00', '123', '0123', '+123', '-123', '-123.', '-123e-4', '-.8E-04',
+    '0.123', '(5)', '-123+4.5j', '0b0101', ' +0B101 ', '0o123', '-0xABC', '0x1a1',
+    '12.5%', '1/2', '½', '3¼', 'π', 'Ⅻ', '1,000,000', '1 000', '- 001.20e+02', 
+    'NaN', 'inf', '-Infinity']
+ 
+for s in tests:
+    print(s,"---",is_numeric(s))
+    
+"""
+OUTPUT:
+
+0 --- True
+0. --- True
+00 --- True
+123 --- True
+0123 --- True
++123 --- True
+-123 --- True
+-123. --- True
+-123e-4 --- True
+-.8E-04 --- True
+0.123 --- True
+(5) --- True
+-123+4.5j --- True
+0b0101 --- True
+ +0B101  --- True
+0o123 --- True
+-0xABC --- True
+0x1a1 --- True
+12.5% --- False
+1/2 --- False
+½ --- False
+3¼ --- False
+π --- False
+Ⅻ --- False
+1,000,000 --- False
+1 000 --- False
+- 001.20e+02 --- False
+NaN --- True
+inf --- True
+-Infinity --- True
+"""