使用python实现python核心编程3第472页和474页的TCP时间戳服务器和客户端服务器间数据传输编程时遇到TypeError: a bytes-like object is required, not 'str'报错问题,经查找资料知道是Python中的字符串数据和字节数据在python3中不能混用所致,一博文 https://eli.thegreenplace.net/2012/01/30/the-bytesstr-dichotomy-in-python-3 对python3中字符串…
Traceback (most recent call last): File , in <module> s.sendall(content) TypeError: a bytes-like object is required, not 'str' --scala_out: protoc-gen-scala: Plugin failed with status code . [error] java.lang.RuntimeException: protoc returned exit c…
利用python中的json读取json文件时,因为错误使用了相应的方法导致报错:TypeError:the Json object must be str, bytes or bytearray,not‘TextIOWrapper’. 解决方法: 首先要弄明白json有四个方法:dumps和loads.dump和load.其中,dumps和loads是在内存中转换(python对象和json字符串之间的转换),而dump和load则是对应于文件的处理. 出现这个错误的原因是自己用了loads方…
最近在看<TensorFlow 实战Google深度学习框架第二版>这本书,测试LeNet-5这个模型时遇到了TypeError: Failed to convert object of type <class 'list'> to Tensor的报错,由于书作者没有给出测试的代码,所以根据前面第五章给出的mnist测试代码修改了测试的代码.至于报错的原因尚且不是很清楚,不过找到了解决方法.只要设置好输入数据X的每个维度大小就可以了.比如 x = tf.placeholder(tf…
文章链接:https://blog.csdn.net/u011878172/article/details/72599120 [问题描述] 1.在一条查询语句中,查询条件既包含了整形又包含了字符串型,执行查询函数后,直接报%d format: a number is required, not str 2.例如 ,如下sql 语句 sql = 'select productid from product where productid = %d and productName = %s' [实…
TypeError: unsupported operand type(s) for +: 'int' and 'str' [closed] sql="insert into auto_transfer_data(atd_type,atd_mogodb_count,atd_mysql_before_count,atd_create_date)values('"+at_type+"','"+str(mongodbcount)+"','"+str(m…
import re from common_p3 import download def crawl_sitemap(url): sitemap = download(url) links = re.findall('<loc>(.*?)</loc>',sitemap) print('links=',links) for link in links: print('link=',link) html = download(link) return crawl_sitemap('ht…
response.read() returns an instance of bytes while StringIO is an in-memory stream for text only. Use BytesIO instead. The StringIO and cStringIO modules are gone. Instead, import the io module and use io.StringIO or io.BytesIO for text and data resp…
在python中,一切皆对象,应该怎么理解呢?? 先来看几个例子: [root@localhost ~]# python3 Python 3.6.3rc1 (default, Feb 26 2018, 22:34:25) [GCC 4.8.5 20150623 (Red Hat 4.8.5-16)] on linux Type "help", "copyright", "credits" or "license" for mo…
python3下,利用hash值对字符串进行md5加密时报错:TypeError: Unicode-objects must be encoded before hashing 原因是:python3跟python2区别:python3下字符串为Unicode类型,而hash传递时需要的是utf-8类型,因此,需要类型转换调用函数时,将字符串进行类型转换 import hashlib def get_md5(s): m = hashlib.md5() m.update(s) r…