organization in the src structure, modification of README

src/builtin_structures/numbers/testing_floats.py

@@ -0,0 +1,45 @@
+#!/usr/bin/python3
+# mari von steinkirch @2013
+# steinkirch at gmail
+
+from fractions import Fraction
+
+def rounding_floats(number1, places):
+    ''' some operations with float()'''
+    return round(number1, places)
+
+
+def float_to_fractions(number):
+    return  Fraction(*number.as_integer_ratio())
+    
+
+def get_denominator(number1, number2):
+    a = Fraction(number1, number2)
+    return a.denominator
+    
+
+def get_numerator(number1, number2):
+    a = Fraction(number1, number2)
+    return a.numerator
+
+
+def test_testing_floats(module_name='this module'):
+    number1 = 1.25
+    number2 = 1
+    number3 = -1
+    number4 = 5/4
+    number6 = 6
+    assert(rounding_floats(number1, number2) == 1.2)
+    assert(rounding_floats(number1*10, number3) == 10)
+    assert(float_to_fractions(number1) == number4)
+    assert(get_denominator(number2, number6) == number6)
+    assert(get_numerator(number2, number6) == number2)
+        
+    s = 'Tests in {name} have {con}!'
+    print(s.format(name=module_name, con='passed'))
+
+
+if __name__ == '__main__':
+    test_testing_floats()
+
+