1 源码路径selenum/webdriver/common/action_chains.py图片2 功能描述提供鼠标操作,模拟用户的鼠标行为;如鼠标的各种单击、双击、滑动、拖拽等操作。3 使用方法源码说的很清晰了,只要使用以下的方法即可: ActionChains can be used in a chain pattern:: menu = driver.find_element_by_css_selector(".nav") hid...
importre text='This is sample text to test if this pythonic '\'program can serve as an indexing platform for '\'finding words in a paragraph. It can give '\'values as to where the word is located with the '\'different examples as stated'find_the_word=re.finditer('as',text)formatch...
Parameter.KEYWORD_ONLY的类型是:<enum '_ParameterKind'> 总结 inspect.signature(fn)将返回一个inspect.Signature类型的对象,值为fn这个函数的所有参数 inspect.Signature对象的paramerters属性是一个mappingproxy(映射)类型的对象,值为一个有序字典(Orderdict)。 这个字典里的key是即为参数名,str类型 这个字典里的...
'/usr/local/lib/python2.7/site-packages/ipaddress-1.0.7-py2.7.egg', '/usr/local/lib/python2.7/site-packages/enum34-1.0.4-py2.7.egg', '/usr/local/lib/python2.7/site-packages/pyasn1-0.1.7-py2.7.egg', '/usr/local/lib/python2.7/site-packages/idna-2.0-py2.7.egg', '/usr/local/lib...
item.find('p').remove()#移除节点#伪类选择器li = doc('li:first-child')#获取第一个节点li = doc('li:last-child')#获取最后一个节点li = doc('li:nth-child(2)')#获取第二个节点li = doc('li:gt(2)')#获取第三个li之后的li节点li = doc('li:nth-child(2n)')#获取偶数位置的li节点li...
正则表达式(称为RE,或正则,或正则表达式模式)本质上是嵌入在Python中的一种微小的、高度专业化的编程语言,可通过re模块获得。 使用这种小语言,你可以为要匹配的可能字符串集指定规则;此集可能包含英语句子,电子邮件地址,TeX命令或你喜欢的任何内容。 然后,您可以询问诸如“此字符串是否与模式匹配?”或“此字符串中...
= 0: print ("enum devices fail! ret[0x%x]" % ret) sys.exit() if deviceList.nDeviceNum == 0: print ("find no device!") sys.exit() print ("Find %d devices!" % deviceList.nDeviceNum) for i in range(0, deviceList.nDeviceNum): mvcc_dev_info = cast(deviceList.pDeviceInfo[i...
def get_computer_by_ID(self): '''查询商品的信息''' find_ID = input("输入查询电脑的编号:") sql = """select * from coumputers where ID='%s';""" % find_ID print("SQL语句:%s" % sql) self.execute_sql(sql) # sql注入问题: # 上面查询商品的sql语句如下: # sql = """select * ...
A metaclass to support case-insensitive enums. Python 複製 from enum import Enum from azure.core import CaseInsensitiveEnumMeta class MyCustomEnum(str, Enum, metaclass=CaseInsensitiveEnumMeta): FOO = 'foo' BAR = 'bar' Null Sentinel Value A falsy sentinel object which is supposed to be use...
You can find the latest API documentation for thenidaqmxpackage onRead the Docs. Refer to theNI-DAQmx User Manualfor an overview of NI-DAQmx, key concepts, and measurement fundamentals. The NI-DAQmx Help also installs locally with the full version of NI-DAQmx. Refer tothis Knowledge Base ...