试卷时间 60分钟，请不要在试卷上作答，用A4纸做答题纸作答。
一，中文单项选择题（30分，每个3分）
1．下列哪个语句在Python中是非法的？
A、x = y = z = 1 B、x = (y = z + 1)
C、x, y = y, x D、x += y
2．关于Python内存管理，下列说法错误的是
A、变量不必事先声明 B、变量无须先创建和赋值而直接使用
C、变量无须指定类型 D、可以使用del释放资源
3、下面哪个不是Python合法的标识符
A、int32 B、40XL C、self D、name
4、下列哪种说法是错误的
A、除字典类型外，所有标准对象均可以用于布尔测试
B、空字符串的布尔值是False
C、空列表对象的布尔值是False
D、值为0的任何数字对象的布尔值是False
5、下列表达式的值为True的是
A、5+4j > 2-3j B、3>2>2
C、(3,2) ‘xyz’
6、Python不支持的数据类型有
A、char B、int C、float D、list
7、关于Python中的复数，下列说法错误的是
A、表示复数的语法是real + image j B、实部和虚部都是浮点数
C、虚部必须后缀j，且必须是小写 D、方法conjugate返回复数的共轭复数
8、关于字符串下列说法错误的是
A、字符应该视为长度为1的字符串 B、字符串以标志字符串的结束
C、既可以用单引号，也可以用双引号创建字符串 D、在三引号字符串中可以包含换行回车等特殊字符
9、以下不能创建一个字典的语句是
A、dict1 = {} B、dict2 = { 3 : 5 } C、dict3 = {[1,2,3]: “uestc”} D、dict4 = {(1,2,3): “uestc”}
10、下列Python语句正确的是
A、min = x if x y ? x : y
C、if (x > y) print x D、while True : pass
二，英文单项选择题（30分）
1.what gets printed? Assuming python version 2.x()
print type(1/2)
A. B. C. D. E.
-
What gets printed?()
Python
nums = set([1,1,2,3,3,3,4])
print len(nums)
1
2
nums = set([1,1,2,3,3,3,4])
print len(nums)
A.1 B.2 C.4 D.5 E.7 -
What gets printed?()
counter = 1
def doLotsOfStuff():
global counter
for i in (1, 2, 3):
counter += 1
doLotsOfStuff()
print counter
1
2
3
4
5
6
7
8
9
10
11
12
counter = 1
def doLotsOfStuff():
global counter
for i in (1, 2, 3):
counter += 1
doLotsOfStuff()
print counter
A.1 B.3 C.4 D.7 E.none of the above
- What gets printed?()
print r"nwoow"
1
print r"nwoow"
A.new line then the string: woow
B.the text exactly like this: r”nwoow”
C.the text like exactly like this: nwoow
D.the letter r and then newline then the text: woow
E.the letter r then the text like this: nwoow
- Which numbers are printed?()
for i in range(2):
print i
for i in range(4,6):
print i
1
2
3
4
5
for i in range(2):
print i
for i in range(4,6):
print i
A.2, 4, 6 B.0, 1, 2, 4, 5, 6 C.0, 1, 4, 5 D.0, 1, 4, 5, 6, 7, 8, 9 E.1, 2, 4, 5, 6
- What gets printed by the code snippet below?()
import math
print math.floor(5.5)
1
2
3
import math
print math.floor(5.5)
A.5 B.5.0 C.5.5 D.6 E.6.0
- Assuming the filename for the code below is /usr/lib/python/person.py
and the program is run as: python /usr/lib/python/person.py
What gets printed?()
class Person:
def init(self):
pass
def getAge(self):
print __name__
p = Person()p.getAge()
1
2
3
4
5
6
7
8
class Person:
def init(self):
pass
def getAge(self):
print __name__
p = Person()p.getAge()
A.Person B.getAge C.usr.lib.python.person D.main E.An exception is thrown
- What gets printed?()
names1 = [‘Amir’, ‘Barry’, ‘Chales’, ‘Dao’]
if ‘amir’ in names1:
print 1
else:
print 2
1
2
3
4
5
6
names1 = [‘Amir’, ‘Barry’, ‘Chales’, ‘Dao’]
if ‘amir’ in names1:
print 1
else:
print 2
A.1 B.2 C.An exception is thrown
- What gets printed?()
numbers = [1, 2, 3, 4]
numbers.append([5,6,7,8])
print len(numbers)
1
2
3
4
5
numbers = [1, 2, 3, 4]
numbers.append([5,6,7,8])
print len(numbers)
A.4 B.5 C.8 D.12 E.An exception is thrown
- What gets printed?()
kvps = { ‘1’ : 1, ‘2’ : 2 }
theCopy = kvps.copy()
kvps[‘1’] = 5
sum = kvps[‘1’] + theCopy[‘1’]
print sum
1
2
3
4
5
6
7
kvps = { ‘1’ : 1, ‘2’ : 2 }
theCopy = kvps.copy()
kvps[‘1’] = 5
sum = kvps[‘1’] + theCopy[‘1’]
print sum
A.1 B.2 C.6 D.10 E.An exception is thrown
三，shell笔试题（15分）
文件如下：
Shell
# cat /etc/passwdroot❌0:0:root:/root:/bin/bash
bin❌1:1:bin:/bin:/sbin/nologin
daemon❌2:2:daemon:/sbin:/sbin/nologin
adm❌3:4:adm:/var/adm:/sbin/nologin
lp❌4:7:lp:/var/spool/lpd:/sbin/nologin
sync❌5:0:sync:/sbin:/bin/sync
shutdown❌6:0:shutdown:/sbin:/sbin/shutdown
halt❌7:0:halt:/sbin:/sbin/halt
mail❌8:12:mail:/var/spool/mail:/sbin/nologin
uucp❌10:14:uucp:/var/spool/uucp:/sbin/nologin
operator❌11:0:operator:/root:/sbin/nologin
games❌12