cpu load different to extract with python

I'm using psutil to remove the CPU load with python.

My problem is that with "top" in Linux shows:

    top - 11:45:52 up 12:39,  1 user,  load average: 0.07, 0.07, 0.09
Tasks:  58 total,   1 running,  57 sleeping,   0 stopped,   0 zombie
%Cpu(s):  0.4 us,  0.1 sy,  0.0 ni, 99.5 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem:   2097152 total,   315124 used,  1782028 free,        0 buffers
KiB Swap:   524288 total,        0 used,   524288 free,   139628 cached

In python view Usage : 3.75%

Mi code in python is:

proc = psutil.cpu_count()
for x in range(proc):
    suma = suma + psutil.cpu_percent(interval=1)

usecpu = suma / proc
print(usecpu)

Thanks for help