Why does %timeit loop different number of times?

Question

On Jupter Notebook, i was trying to compare time taken between the two methods for finding the index with max value.

In the Image, the first function took, 1000

Answer 1

%timeit library will limit the number of runs depending on how long the script takes to execute.

The number of runs may be set with -n. Example:

%timeit -n 5000
df = pd.DataFrame({'High':[1,4,8,4,0]})

5000 loops, best of 3: 592 µs per loop