filename='example.txt'search_string='Python'withopen(filename,'r')asfile:forlineinfile:ifsearch_stringinline:print('File contains the string:',search_string)breakelse:print('File does not contain the string:',search_string) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 上面的代码首先打开一个...
print(str.__contains__('ABC', 'D')) Output: Let’s look at another example where we will ask the user to enter both the strings and check if the first string contains the second string or substring or not. input_str1 = input('Please enter first input string\n') input_str2 = in...
print(text.startswith("Hello")) # True filename = "report.pdf" print(filename.endswith(".pdf")) # True 10、字符串的拼接和拆分 字符串join()和split()方法,该方法可以传递参数,从而实现字符串的拼接和拆分。 # join() 实例 words = ['Hello', 'World'] joined_string = ', '.join(words)...
filepath,tmpfilename=os.path.split(fileUrl) shotname, extension= os.path.splitext(tmpfilename) Theosmodule contains two sub-modulesos.sys(same assys) andos.paththat are dedicated to the system and directories; respectively. import os import os.sys import os.path 读取输入 按行读取 逐行读取一...
1>>>dir(str)2['__add__','__class__','__contains__','__delattr__','__dir__','__doc__','__eq__','__format__','__ge__','__getattribute__','__getitem__','__getnewargs__','__gt__','__hash__','__init__','__iter__','__le__','__len__','__lt_...
# main.pyimportosimportstring a=102content ="this is a very long string contains: %s, %s"%(string.ascii_lowercase, string.ascii_uppercase)ifnot(len(content)==0):if( (1+2) % (4+3) ) ==1andaisnotNone:pass 使用flake8 检查后得到的结果将会是这样: ...
1 open(filename [, mode [, bufsize]]) 2 打开一个文件,返回一个file对象。 如果文件无法打开,将处罚IOError异常。 3 应该使用open()来代替直接使用file类型的构造函数打开文件。 4 参数filename表示将要被打开的文件的路径字符串; 5 参数mode表示打开的模式,最常用的模式有:'r'表示读文本,'w'表示写文本...
[:port] # http://hostname[:port] # 2) Do not add a trailing slash at the end of file server path. FILE_SERVER = 'sftp://sftpuser:Pwd123@10.1.3.2' # Remote file paths: # 1) The path may include directory name and file name. # 2) If file name is not specified, indicate ...
add_header('content-disposition', 'attachment', filename='test.jpg') # msg.attach(message_image) #发送邮件 smt_p.sendmail(sender,i,msg.as_string()) #sleep10秒避免发送频率过快,可能被判定垃圾邮件。 time.sleep(10) print('第%d次发送给%s' % (count_num,i)) count_num = count_num + 1...
4.6.__contains__(self, item) 成员运算符in/not in的行为 item in self或item not in self # 重写方法返回值会变成布尔值,当使用not in时,True会变成False,False会变成True 补充:描述器(Descriptor) 1.概念 描述器是具有“绑定行为”的对象属性,其属性访问已被描述器协议中的方法所重载,包括__get__(),...