defread_large_file(file_path):withopen(file_path,"r")asf:forlineinf:yieldline.strip()# 每次返回一行,避免一次性加载整个文件 log_generator=read_large_file("huge_log.txt")for_inrange(5):print(next(log_generator))# 逐行读取 这个方法让我们只加载当前需要处理的一行,而不是整个文件,适用于大型日...
continue ... print("Found a number", num) Found an even number 2 Found a number 3 Found an even number 4 Found a number 5 Found an even number 6 Found a number 7 Found an even number 8 Found a number 9 4.5 pass陈述 该pass语句什么也不做。当语法需要语句但程序不需要操作时,可以...
print(f"文件大小: {stat_info.st_size} 字节") print(f"修改时间: {datetime.fromtimestamp(stat_info.st_mtime)}") print(f"inode: {stat_info.st_ino}") print(f"设备 ID: {stat_info.st_dev}") print(f"链接数: {stat_info.st_nlink}") print(f"所有者 UID: {stat_info.st_uid}") ...
end() line_num += 1 continue elif kind == 'SKIP': continue elif kind == 'MISMATCH': raise RuntimeError(f'{value!r} unexpected on line {line_num}') yield Token(kind, value, line_num, column) statements = ''' IF quantity THEN total := total + price * quantity; tax := price...
i=int(s.strip())exceptOSError as err:print("OS error: {0}".format(err))exceptValueError:print("Could not convert data to an integer.")except:print("Unexpected error:", sys.exc_info()[0])raise Thetry...exceptstatement has an optionalelse clause, which, when present, must follow all...
end() line_num += 1 continue elif kind == 'SKIP': continue elif kind == 'MISMATCH': raise RuntimeError(f'{value!r} unexpected on line {line_num}') yield Token(kind, value, line_num, column) 上面这个官方文档里的程序,输入一段代码,返回 token 的:名称、原始文本、行号、列号 等。
"""快速入门"""fromaligoimportAligoif__name__ =='__main__': ali = Aligo()# 第一次使用,会弹出二维码,供扫描登录user = ali.get_user()# 获取用户信息print(user.user_name, user.nick_name, user.phone)# 打印用户信息ll = ali.get_file_list()# 获取网盘根目录文件列表forfileinll:# 遍历文...
4.4 break 和 continue语句,以及循环中的else子句 break语句,如在C中一样,从最深层封装的for或while循环中跳出来(中断循环)。 循环语句可以有一个else子句,当循环通过耗尽列表(带有for)终止时或者当条件变为false (带有while)时,else子句被执行;但是,当由一个break语句终止循环时,else子句不执行。下列查找质数的循...
break ... print(stuff.capitalize()) Sometimes, you don’t want to break out of a loop but just want to skip ahead to the next iteration for some reason. Just use 'continue' at that time. Check break use with else: it may seems nonintuitive. Consider it a break checker. Iterate ...
8. Print Numbers 0 to 6 Except 3 and 6 Write a Python program that prints all the numbers from 0 to 6 except 3 and 6. Note : Use 'continue' statement. Expected Output : 0 1 2 4 5 Click me to see the sample solution 9. Fibonacci Series Between 0 and 50 ...