# range function can take different integer arguments
>>> for x in range(10):
...     print(x)
... 
0
1
2
3
4
5
6
7
8
9
>>> for x in range(0, 100, 10):
...     print(x)
...
0
10
20
30
40
50
60
70
80
90
>>> for x in range(0, 1.0, 0.1):
...     print(x)
...
Traceback (most recent call last):
  File "/Users/rcd/Library/Enthought/Canopy_64bit/User/lib/python2.7/site-packages/IPython/core/interactiveshell.py", line 2721, in run_code
    exec code_obj in self.user_global_ns, self.user_ns
  File "<ipython-input-4-07c5396cc173>", line 1, in <module>
    for x in range(0, 1.0, 0.1):
TypeError: range() integer end argument expected, got float.

# one way to convert from range’s integer to floats 
>>> priceRange = [ ]
>>> for x in range(10):
...     priceRange += [ x * 0.1 ]
...     
>>> priceRange
Out[7]: 
[0.0,
 0.1,
 0.2,
 0.30000000000000004,
 0.4,
 0.5,
 0.6000000000000001,
 0.7000000000000001,
 0.8,
 0.9]


# some results of getting elements out of strings and lists
>>> s = 'abc'
>>> s[0]
Out[9]: 'a'
>>> sl = [ 'abc', 'def', 'ghi' ]
>>> type(sl[0])
Out[10]: str
>>> sl[0][0]
Out[11]: 'a'
>>> type(sl[0][0])
Out[12]: str
>>> for x in sl:
...     print(x)
... 
abc
def
ghi
>>> for x in sl:
...     print(x[0])
... 
a
d
g
>>> range(10)
Out[16]: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> type(range(10))
Out[17]: list
>>> range(10)[0]
Out[18]: 0
>>> type(range(10)[0])
Out[19]: int