pickle

How to load Pickle file in chunks?

由 会有一股神秘感。 提交于 2021-02-20 08:34:02
问题 Is there any option to load a pickle file in chunks? I know we can save the data in CSV and load it in chunks. But other than CSV, is there any option to load a pickle file or any python native file in chunks? 来源： https://stackoverflow.com/questions/59983073/how-to-load-pickle-file-in-chunks

pyinstaller and loading pickle file

由 落爺英雄遲暮 提交于 2021-02-19 03:56:07
问题 Has anyone worked with pyinstaller to create windows executables from python scripts? I'm trying to create an executable that loads a pickle file but not successful. import pickle filename='test.sav' try: model = pickle.load(open(filename, 'rb')) print('model loaded') except: print('An error occurred.') When run with python 3, it works and loads the model correctly but when run with the executable created by pyinstaller , it will through an exception. Help appreciated. 回答1: Im using kivy with

How to unpickle a file in Java?

由 旧街凉风 提交于 2021-02-18 19:45:15
问题 I have a 'pickle' format datafile that was created by a Python process (actually, the MCDungeon cache file). I want to read this from a Java program. To do this, I have used this code: public HashMap<String, Object> getDataFileStream(String filename) { HashMap<String, Object> data = new HashMap<String, Object>(); File f = new File(filename); InputStream fs = null; try { fs = new FileInputStream(f); } catch (FileNotFoundException e) { Log.warning("Pickle file '"+filename+"' not found!");

How to unpickle a file in Java?

由 半腔热情 提交于 2021-02-18 19:44:51
问题 I have a 'pickle' format datafile that was created by a Python process (actually, the MCDungeon cache file). I want to read this from a Java program. To do this, I have used this code: public HashMap<String, Object> getDataFileStream(String filename) { HashMap<String, Object> data = new HashMap<String, Object>(); File f = new File(filename); InputStream fs = null; try { fs = new FileInputStream(f); } catch (FileNotFoundException e) { Log.warning("Pickle file '"+filename+"' not found!");

multiprocessing queue issue with pickle dumps

由 落花浮王杯 提交于 2021-02-18 18:02:22
问题 I have read and read again the Python documentation about multiprocessing module and Queues management but I cannot find anything related to this issue that turns me crazy and is blocking my project: I wrote a 'JsonLike' class which allows me to create an object such as : a = JsonLike() a.john.doe.is.here = True ...without considering intermediate initialization (very useful) The following code just creates such an object, set and insert it in a array and tries to send that to a process (this

How to use dill library for object serialization with shelve library

由 烂漫一生 提交于 2021-02-16 21:26:09
问题 I'm using PyMemoize library to cache coroutine. I decorated the coroutine, but when Python calls it, I get: TypeError: can't pickle coroutine objects This happens because PyMemoize internally tries to pickle coroutine and store it inside Redis. For this, it uses shelve.Shelf , which in turn uses pickle . The problem is that, by unknown reason, pickle doesn't support pickling coroutines. I've tried to pickle coroutines with dill and it worked. How do I tell shelve to use dill as serialization

How to use dill library for object serialization with shelve library

由 て烟熏妆下的殇ゞ 提交于 2021-02-16 21:24:17
问题 I'm using PyMemoize library to cache coroutine. I decorated the coroutine, but when Python calls it, I get: TypeError: can't pickle coroutine objects This happens because PyMemoize internally tries to pickle coroutine and store it inside Redis. For this, it uses shelve.Shelf , which in turn uses pickle . The problem is that, by unknown reason, pickle doesn't support pickling coroutines. I've tried to pickle coroutines with dill and it worked. How do I tell shelve to use dill as serialization

Python简单的get和post请求

由 此生再无相见时 提交于 2021-02-15 13:52:45
1. json 模块提供了一种很简单的方式来编码和解码JSON数据。 其中两个主要的函数是 json.dumps() 和 json.loads() ， 要比其他序列化函数库如pickle的接口少得多。 下面演示如何将一个Python数据结构转换为JSON： import json data = { 'name' : 'ACME', 'shares' : 100, 'price' : 542.23 } json_str = json.dumps(data) 下面演示如何将一个JSON编码的字符串转换回一个Python数据结构： data = json.loads(json_str) 2.简单的get和post请求，使用import requests import requests response = requests.get('http://httpbin.org/get') print(response.text) #通过在发送post请求时添加一个data参数，这个data参数可以通过字典构造成 import requests data = { "name":"zhaofan", "age":23 } response = requests.post("http://httpbin.org/post",data=data) print(response.text) 3

python sklearn2pmml

由 本秂侑毒 提交于 2021-02-14 15:38:01
问题导读 1.scikit-learn已经成为Python重要的机器学习库，那么如何将scikit-learn训练好的模型直接导出为PMML呢？ 2.如何将原有pickle格式的模型文件转换为PMML? 综述 自2007年发布以来，scikit-learn已经成为Python重要的机器学习库了。scikit-learn简称sklearn，支持包括分类、回归、降维和聚类四大机器学习算法。还包含了特征提取、数据处理和模型评估三大模块。 sklearn拥有着完善的文档，上手容易，具有着丰富的API，在学术界颇受欢迎。sklearn已经封装了大量的机器学习算法，包括LIBSVM和LIBINEAR。同时sklearn内置了大量数据集，节省了获取和整理数据集的时间。 本文介绍了如何将sklearn中的模型导出为PMML文件，方便后续的工程上线操作，内容包括涉及环境的搭建和中间遇到的坑。 前置知识 Python 基本操作，会使用pip 或者Anaconda进行依赖库管理 Maven 基本操作 Java 命令基本操作 sklearn2pmml 使用sklearn2pmml 可以在python中，训练完模型之后，直接将模型导出为PMML文件。 软件版本 Python 2.7，3.4 或者更新。 scikit-learn 0.16.0 或者更新。 sklearn-pandas 0.0.10 或者更新。

Online game give the error “(”ConnectionAbortedError: [WinError 10053] "

由 房东的猫 提交于 2021-02-11 15:25:14
问题 I made a game in python with pygame and socket, my game works perfectly in local server, but when i want to try it with my friend it give me these errors : ("ConnectionAbortedError: [WinError 10053] An established connection was aborted by the software in your host machine and Traceback (most recent call last File "C:/Users/Zahraa Rached/Desktop/Poké-aim/client.py", line 54, in <module> game = n.send("get") File "C:\Users\Zahraa Rached\Desktop\Poké-aim\network.py", line 25, in send return
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