1 files changed, 0 insertions, 93 deletions
diff --git a/Demo/classes/Range.py b/Demo/classes/Range.py
deleted file mode 100755
index a0cef74..0000000
--- a/Demo/classes/Range.py
+++ /dev/null
@@ -1,93 +0,0 @@
-"""Example of a generator: re-implement the built-in range function
-without actually constructing the list of values.
-
-OldStyleRange is coded in the way required to work in a 'for' loop before
-iterators were introduced into the language; using __getitem__ and __len__ .
-
-"""
-def handleargs(arglist):
-    """Take list of arguments and extract/create proper start, stop, and step
-    values and return in a tuple"""
-    try:
-        if len(arglist) == 1:
-            return 0, int(arglist[0]), 1
-        elif len(arglist) == 2:
-            return int(arglist[0]), int(arglist[1]), 1
-        elif len(arglist) == 3:
-            if arglist[2] == 0:
-                raise ValueError("step argument must not be zero")
-            return tuple(int(x) for x in arglist)
-        else:
-            raise TypeError("range() accepts 1-3 arguments, given", len(arglist))
-    except TypeError:
-        raise TypeError("range() arguments must be numbers or strings "
-        "representing numbers")
-
-def genrange(*a):
-    """Function to implement 'range' as a generator"""
-    start, stop, step = handleargs(a)
-    value = start
-    while value < stop:
-        yield value
-        value += step
-
-class oldrange:
-    """Class implementing a range object.
-    To the user the instances feel like immutable sequences
-    (and you can't concatenate or slice them)
-
-    Done using the old way (pre-iterators; __len__ and __getitem__) to have an
-    object be used by a 'for' loop.
-
-    """
-
-    def __init__(self, *a):
-        """ Initialize start, stop, and step values along with calculating the
-        nubmer of values (what __len__ will return) in the range"""
-        self.start, self.stop, self.step = handleargs(a)
-        self.len = max(0, (self.stop - self.start) // self.step)
-
-    def __repr__(self):
-        """implement repr(x) which is also used by print"""
-        return 'range(%r, %r, %r)' % (self.start, self.stop, self.step)
-
-    def __len__(self):
-        """implement len(x)"""
-        return self.len
-
-    def __getitem__(self, i):
-        """implement x[i]"""
-        if 0 <= i <= self.len:
-            return self.start + self.step * i
-        else:
-            raise IndexError('range[i] index out of range')
-
-
-def test():
-    import time, builtins
-    #Just a quick sanity check
-    correct_result = builtins.range(5, 100, 3)
-    oldrange_result = list(oldrange(5, 100, 3))
-    genrange_result = list(genrange(5, 100, 3))
-    if genrange_result != correct_result or oldrange_result != correct_result:
-        raise Exception("error in implementation:\ncorrect   = %s"
-                         "\nold-style = %s\ngenerator = %s" %
-                         (correct_result, oldrange_result, genrange_result))
-    print("Timings for range(1000):")
-    t1 = time.time()
-    for i in oldrange(1000):
-        pass
-    t2 = time.time()
-    for i in genrange(1000):
-        pass
-    t3 = time.time()
-    for i in builtins.range(1000):
-        pass
-    t4 = time.time()
-    print(t2-t1, 'sec (old-style class)')
-    print(t3-t2, 'sec (generator)')
-    print(t4-t3, 'sec (built-in)')
-
-
-if __name__ == '__main__':
-    test()