python的内存调试

python内存增加，内存泄漏调试

gc，objgraph

        ### 强制进行垃圾回收  
        gc.collect()  
        # ### 打印出对象数目最多的 50 个类型信息  
        # objgraph.show_most_common_types(limit=20) 
        objgraph.show_growth()
        # objgraph.show_backrefs(objgraph.by_type('function')[0], max_depth = 10, filename = 'obj.dot')
        # objgraph.show_chain(
        # objgraph.find_backref_chain(
        #     objgraph.by_type('_InputList')[0],
        #     objgraph.is_proper_module
        # ),
        # filename='obj_chain.dot')
        # objgraph.show_backrefs(objgraph.by_type('Tensor')[0], extra_ignore=(id(gc.garbage),),  max_depth = 10, filename = 'del_obj.dot')

以此方法生成dot文件之后

import os
import pydotplus
import pydot
os.environ["PATH"] += os.pathsep + 'D:/graphviz/bin'
file_path = "D:/microsoft/ImageCreation/del_obj.dot"
output_path = "D:/microsoft/ImageCreation/del_obj.pdf"
with open(file_path,'r') as f:
    graph = pydot.graph_from_dot_data(f.read())
    graph[0].write_pdf(output_path)

用pydot将dot转换成pdf可视化观看

另外一种方式，木有尝试过，可能比较简单，直接保存为graph.png格式，省略转换步骤

import objgraph
objgraph.show_growth()  # show the growth of the objects
objgraph.show_refs(variableName, filename='graph.png')  # show the reference structure of the variable