Python如何查看程序内存占用情况

pip install memory_profiler

import numpy as np
import os
import psutil
import GC
from memory_profiler import profile

@profile
def test():
    a=np.full(shape=(600, 700), fill_value=99.0)
    return a

if __name__ == '__main__':

    a=test()

    print('A：%.2f MB' % (psutil.Process(os.getpid()).memory_info().rss / 1024 / 1024))
    del a
    gc.collect()
    print('B：%.2f MB' % (psutil.Process(os.getpid()).memory_info().rss / 1024 / 1024))

Python -m memory_profiler test.py

import psutil
import os

info = psutil.virtual_memory()
print(u'内存使用：',psutil.Process(os.getpid()).memory_info().rss)
print(u'总内存：',info.total)
print(u'内存占比：',info.percent)
print(u'cpu个数：',psutil.cpu_count())