String classification

Save all these functions in file classify.py

1. Write function class1() that, given a text (str), returns True if it contains only lowercase letters and False otherwise. Examples:

   >>> class1('Hi John')
   False
   >>> class1('three cars')
   False
   >>> class1('diamond')
   True
   >>> class1('CLUE')
   False
   >>> class1('sweter')
   True
   

   Note

   More tests are provided in file test-class1.txt

2. Write function class2() that, given a text (str), returns True if it represents a real amount and False otherwise. Examples:

   >>> class2('Bye. Alex')
   False
   >>> class2('0.0')
   True
   >>> class2('34.53€')
   False
   >>> class2('123.0')
   True
   >>> class2('Price: 45.8')
   False
   >>> class2('8723.6512')
   True
   >>> class2('234567')
   False
   >>> class2('0.')
   True
   

   Note

   More tests are provided in file test-class2.txt

Solution

A solution is provided in file classify.py.