C:\Windows\System32> python -m timeit  -r 3 -s "n=0" "n=n+1"
10000000 loops, best of 3: 0.0834 usec per loop

C:\Windows\System32> python -m timeit  -r 3 -s "n=0" "n += 1"
10000000 loops, best of 3: 0.0896 usec per loop

C:\Windows\System32> python -m timeit  -r 3 -s "n=0" "n=n+1"
10000000 loops, best of 3: 0.0834 usec per loop

C:\Windows\System32> python -m timeit  -r 3 -s "n=0" "n += 1"
10000000 loops, best of 3: 0.0879 usec per loop

C:\Windows\System32> python -m timeit  -r 3 -s "n=0" "n=n+1"
10000000 loops, best of 3: 0.0831 usec per loop

C:\Windows\System32> python -m timeit  -r 3 -s "n=0" "n += 1"
10000000 loops, best of 3: 0.0902 usec per loop

C:\Windows\System32> python -m timeit  -r 3 -s "n=0" "n=n+1"
10000000 loops, best of 3: 0.084 usec per loop

C:\Windows\System32> python -m timeit  -r 3 -s "n=0" "n += 1"
10000000 loops, best of 3: 0.0884 usec per loop

C:\Windows\System32> python -m timeit  -r 3 -s "n=0" "n=n+1"
10000000 loops, best of 3: 0.0842 usec per loop

C:\Windows\System32> python -m timeit  -r 3 -s "n=0" "n += 1"
10000000 loops, best of 3: 0.0892 usec per loop

C:\Windows\System32> python -m timeit  -r 3 -s "n=0" "n=n+1"
10000000 loops, best of 3: 0.0835 usec per loop

C:\Windows\System32> python -m timeit  -r 3 -s "n=0" "n += 1"
10000000 loops, best of 3: 0.0899 usec per loop

C:\Windows\System32> python -m timeit  -r 3 -s "n=0" "n=n+1"
10000000 loops, best of 3: 0.0837 usec per loop

C:\Windows\System32> python -m timeit  -r 3 -s "n=0" "n += 1"
10000000 loops, best of 3: 0.0893 usec per loop

C:\Windows\System32> python -m timeit  -r 3 -s "n=0" "n=n+1"
10000000 loops, best of 3: 0.0838 usec per loop

C:\Windows\System32> python -m timeit  -r 3 -s "n=0" "n += 1"
10000000 loops, best of 3: 0.0893 usec per loop

C:\Windows\System32> python -m timeit  -r 3 -s "n=0" "n=n+1"
10000000 loops, best of 3: 0.0839 usec per loop

C:\Windows\System32> python -m timeit  -r 3 -s "n=0" "n += 1"
10000000 loops, best of 3: 0.0891 usec per loop