gistfile1.txt

In [23]: def test_17(n):
   ....:     for _ in range(n):
   ....:         x = random()
   ....:         assert x == float('{:1.16e}'.format(x))
   ....:     print('Test success')
   ....:

In [24]: test_17(1000000)
Test success

In [27]: def test_16(n):
    for _ in range(n):
        x = random()
        assert x == float('{:1.15e}'.format(x))
    print('Test success')
   ....:

In [28]: test_16(1000000)
---------------------------------------------------------------------------
AssertionError                            Traceback (most recent call last)
<ipython-input-28-f4fed7690d1e> in <module>()
----> 1 test_16(1000000)

<ipython-input-27-d3a9aed9c7ce> in test_16(n)
      2     for _ in range(n):
      3         x = random()
----> 4         assert x == float('{:1.15e}'.format(x))
      5     print('Test success')
      6

AssertionError:

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