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RSS订阅原创 python, 什么是duck typing
经常在python的书中会提到 一个叫duck typing 的词，但它究竟是什么意思呢？ as an interpreted and dynamically typed language, there is no ‘compile time’ checking of data types in Python, and no formal requirement for declarations...
2018-03-20 21:28:18
407
原创 python, modules and import
there are several ways to import module to Python, like:1. from math import pi, sqrt recommended2. from math import * don't use it unless you have a good reason, and you understand the risk it w...
2018-03-20 20:42:07
216
原创 python, 一类对象
first-class objectsdefinition: instances of a type that can be assigned to an identifier, passed as a parameter or returned by a function.e.g. yell=printyell('hello world')in this case, yell is consid...
2018-03-20 20:34:48
245
转载 Python certification verfication
SSL Warningspython 在使用代理时会出现InsecureRequestWarning的情况，原因如下：urllib3 will issue several different warnings based on the level of certificate verification support. These warning indicate particular situa...
2018-03-01 16:06:47
439
原创 vb.net 操作excel
Imports Microsoft.Office.Interop.Excel Public Class Form1 Dim data_arr() As String Sub excelConnection() Dim newsht As Worksheet Dim excelpath As String Dim shtname As String Di...
2017-02-15 11:29:30
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