Python: Why does append(), append incorrect data?

Python: Why does append(), append incorrect data?

I am not looking for a fix of my code, I want to understand what mechanism
causes my list periodically be populated with incorrect data.
x = []
h = 0.01
for i in range(101):
x.append(1+i*h)
print x
"""
~$ python ~/dev/python/inf1100/coor1.py
[1.0, 1.01, 1.02, 1.03, 1.04, 1.05, 1.06, 1.07, 1.08, 1.09, 1.1, 1.11,
1.12, 1.13, 1.1400000000000001, 1.15, 1.16, 1.17, 1.18, 1.19, 1.2, 1.21,
1.22, 1.23, 1.24, 1.25, 1.26, 1.27, 1.28, 1.29, 1.3, 1.31, 1.32, 1.33,
1.34, 1.35, 1.3599999999999999, 1.37, 1.38, 1.3900000000000001, 1.4,
1.4100000000000001, 1.42, 1.43, 1.44, 1.45, 1.46, 1.47, 1.48, 1.49, 1.5,
1.51, 1.52, 1.53, 1.54, 1.55, 1.56, 1.57, 1.58, 1.5899999999999999, 1.6,
1.6099999999999999, 1.62, 1.63, 1.6400000000000001, 1.65,
1.6600000000000001, 1.67, 1.6800000000000002, 1.69, 1.7000000000000002,
1.71, 1.72, 1.73, 1.74, 1.75, 1.76, 1.77, 1.78, 1.79, 1.8, 1.81, 1.82,
1.83, 1.8399999999999999, 1.85, 1.8599999999999999, 1.87, 1.88,
1.8900000000000001, 1.9, 1.9100000000000001, 1.92, 1.9300000000000002,
1.94, 1.9500000000000002, 1.96, 1.97, 1.98, 1.99, 2.0]
"""
When the list of numbers printed is inspected, the observer notices that
the number 1.14 which was expected to appear in the list is not there,
instead the float 1.1400000000000001 is found.
This happens multiple times throughout the list.
What is causing this to happen?