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单选题 向文件中写入内容,-w和-x都是写模式,通常选择用-w的可能原因是( )
学科：Python程序设计
时间：2024-01-14 15:03:12
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题目1单选题
运行下方代码,x得到的结果为( ). import math x = math.sqrt(36) if '2' in '123' else 36A. '2'B. '123'C. 6D. 36
题目2单选题
#阅读程序,选择结果 try: a=7 c= a//b except NameError: print("situation1") else: print("situation2") finally: print("situation3")A. situation1 situation2B. situation1 situation3C. situation2 situation3D. situation1 situation2 situation3
题目3单选题
#阅读程序,选择结果 try: a=7 b=5 c= a//b except NameError: print("situation1") else: print("situation2") finally: print("situation3")A. situation1 situation2B. situation1 situation3C. situation2 situation3D. situation1 situation2 situation3
题目4单选题
# 阅读程序,选择结果 fruit=["apple","orange","grapes","banana","cherry"] mylist=list() for item in fruit: if item=="banana": break mylist.append(item) print(mylist)A. ["apple","orange","grapes","banana","cherry"]B. ["apple","orange","grapes","banana"]C. ["banana","cherry"]D. ['apple', 'orange', 'grapes']
题目5单选题
# 阅读程序,选择结果 alist=["putian","university","New Engineering Industry College","software engineering"] for item in alist: print(item.upper()) print(item.lower())A. PUTIAN UNIVERSITY NEW ENGINEERING INDUSTRY COLLEGE SOFTWARE ENGINEERINGB. PUTIAN putian UNIVERSITY university NEW ENGINEERING INDUSTRY COLLEGE new engineering industry college SOFTWARE ENGINEERING software engineeringC. putian university new engineering industry college software engineeringD. PuTian University New Engineering Industry College Software Engineering
题目6单选题
向文件中写入内容,-w和-x都是写模式,通常选择用-w的可能原因是( )A. 同名文件不存在适用B. 无论同名文件是否存在,都能适用C. 同名文件存在适用D. -x参数普遍适用,同名文件存在也不出错,能强制覆盖
题目7单选题
# 阅读程序,选择结果 alist=[k for k in range(10)] print(alist[0::2]) print(alist[1::2])A. [0,1,2,3,4,5,6,7,8,9]B. [0, 2, 4, 6, 8] [1, 3, 5, 7, 9]C. [1, 3, 5, 7, 9] [0, 2, 4, 6, 8]D. [0, 2, 4, 6, 8] [1, 3, 5, 7, 9]
题目8单选题
在面向对象编程中,下述关于类和对象描述正确的是 ( )A. 类是抽象的某类对象的模型,它定义了对象具有的属性和行为B. 属性是类的特征,称为类成员变量;方法是类的行为,用函数的形式表示C. 对象是类的实例,一个类可以创建多个对象D. 以上都对
题目9单选题
# 阅读程序,选择结果 mytup=tuple("莆田学院") print(mytup) print(mytup*2)A. ('莆田学院') ('莆田学院') , ('莆田学院')B. ('莆田学院') ('莆', '田', '学', '院', '莆', '田', '学', '院')C. ('莆', '田', '学', '院') ('莆', '田', '学', '院', '莆', '田', '学', '院')D. ('莆田学院') ('莆田学院', '莆田学院')
题目10单选题
#阅读程序,选择结果 lst = [1, 2, 3, 4, 5] result = map(lambda x: x + 1, lst) print(list(result))A. [2, 3, 4, 5, 6]B. [1, 2, 3, 4, 5, 6]C. [1, 2, 3, 4, 5]D. 以上答案都不对
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