We can know from the function signature:
In [7]: random.randrange? Signature: random.randrange(start, stop=None, step=1, _int=<type 'int'>, _maxwidth=9007199254740992L) Docstring: Choose a random item from range(start, stop[, step]). This fixes the problem with randint() which includes the endpoint; in Python this is usually not what you want. File: /usr/lib/python2.7/random.py Type: instancemethod In [8]: random.uniform? Signature: random.uniform(a, b) Docstring: Get a random number in the range [a, b) or [a, b] depending on rounding. File: /usr/lib/python2.7/random.py Type: instancemethod
randrange is randomly selected from range(start, stop[, step]), and the generated one must be int;
uniform is from [a, b) or generate a random number in [a, b], the generated number is float;
these two usage scenarios are different.
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