PythonListPrinter+printListToFile(data: List, file_path: str) : boolPythonFile-file_path: str+getFile() : file+openFile(mode: str) : bool+writeData(data: str) : bool+closeFile() : bool 以上是一种简化的类图,其中PythonListPrinter类是用于打印List到TXT文件的主类,而PythonFile类是用于处理文...
25 printers = win32print.EnumPrinters(win32print.PRINTER_ENUM_LOCAL | win32print.PRINTER_ENUM_CONNECTIONS) 26 printer_list = [] 27 for printer in printers: 28 printer_name = printer[2] 29 printer_list.append(printer_name) 30 return printer_list 31 32 class Application(Frame): 33 def __...
#找出路径下所有的.ui文件 deflistUiFile():list=[]files=os.listdir(dir)forfilenameinfiles:#print(filename)ifos.path.splitext(filename)[1]=='.ui':list.append(filename)returnlist #把扩展名未.ui的转换成.py的文件 deftransPyFile(filename):returnos.path.splitext(filename)[0]+'.py'#通过命...
python 中的 print 函数与 list函数 print() 函数: 传入单个参数时默认回车换行,关键词end可以用来避免输出后的回车(换行), 或者以一个不同的字符串结束输出。 1 2 3 4 5 6 >>> a, b=0,1 >>>whileb <1000: ...print(b, end=',') ... a, b=b, a+b ... 1,1,2,3,5,8,13,21,34...
write_filename_object.write(sortedWord.title() +'\n')#每写入一个单词就换行# print(f"The total word matches is: {len(listOfWordMatch)}.")else:# print(f"The word \'{word.upper()}\' you just entered does not appear in the file, Check please!")passprint(f"the total number of wo...
['From']='from@qq.com'msg['To']='to1@qq.com,to2@qq.com'# msg['To']的值包含多个Email地址,用逗号隔开;msg['Subject']=Header('python email test','utf-8').encode()smtp=smtplib.SMTP_SSL('smtp.qq.com')smtp.login('from@qq.com','passwd')# sendmail函数的第2个参数,是一个list。
>>> ls3=[1,1.0,print(1),True,['list',1],(1,2),{1,4},{'one':1}] 1 >>> ls3.insert(1,"俺插入值在此!") >>> print(ls3) [1, '俺插入值在此!', 1.0, None, True, ['list', 1], (1, 2), {1, 4}, {'one': 1}] 2、在列表末尾添加元素 ls.append(x):将元素x添加...
许多解决方案都是可能的,这里有一个: with open("abc.txt","r+") as data_file: list_of_elements=[] # creating an empty list to store all elements interesting to you for line in data_file: data=line.split() del data[1:] print(data) list_of_elements.append(str(data)) # appending ...
先看错误类型(如ValueError、IndexError)和提示信息——它们通常会准确告诉你哪里出了问题(比如“list index out of range”或“NameError: name ‘foo’ is not defined”)。接着查看上方的文件名和行号,定位到底是代码的哪一行出错。例如,如果你看到“NameError: name ‘nam’ is not defined”,你就知道变量...
with open("poems.txt",'rt',encoding='UTF-8') as file: ls1=list(file) print("ls1:",ls1,sep='\n') #output: ls1: ['\ufeff北风卷地百草折,胡天八月即飞雪。\n', '忽如一夜春风来,千树万树梨花开。\n', '散入珠帘湿罗幕,狐裘不暖锦衾薄。\n', '将军角弓不得控,都护铁衣冷难着。']...