一、基础篇
- 想要像类似执行shell脚本一样执行Python脚本，需要在py文件开头加上什么？KEY:#!/usr/bin/env python
- Python解释器在加载 .py 文件中的代码时，会对内容进行编码（默认ascill），我们应该选择什么编码？如何配置？ KEY:UTF8 | # -*- coding: utf-8 -*-
- Python中使用什么符号做注释，多行注释使用什么？ KEY:# | 三个连续的单引号或三个连续的双引号
- Python中的单引号和双引号有无区别？ KEY:无
- Python中使用什么命令导入模块？ KEY:import modulename
- py文件在执行过程中会自动生成一个与其同名的 .pyc 文件，它是什么？有什么用？KEY:pyc是由py文件经过编译后二进制文件，py文件变成pyc文件后，加载的速度有所提高，而且pyc是一种跨平台的字节码，是由python的虚拟机来执行的.
- 按Python中的变量定义，以下哪个是合法变量？ [A: _name1 B:123 C:class D:abc-] KEY:A
-
Python使用缩进作为语法边界,一般建议怎样缩进?
A.TAB B.两个空格 C.四个空格 D.八个空格KEY:C -
print(100 - 25 * 3 % 4) 打印的结果是?
A.1 B.97 C.25 D.82KEY:B
-
下列语句中，非法的是_____?
A.x=y=1B.x=(y=1)C.x,y=y,xD.x=1;y=1KEY:B -
>>> n = 3
>>> a = 1 if n > 2 else 3>>> a输出结果是_______？KEY:1 -
>>> a = lambda x: x+1
>>> a(1)输出结果是_______？KEY:2 -
>>> chr(65)
输出结果是_______？KEY:'A' -
>>> ord("A")
输出结果是_______？KEY:65 -
>>> n = 8
>>> n.bit_length()结果是_______?KEY:4 - >>> hash(1.0) == hash(1) 输出结果是？ KEY:True
-
>>> a = 0x11
>>> b = 0o11>>> c = 0b11a + b + c 的值为_____?KEY:29 -
>>> print('Alex'.center(6, '*'))
结果是_______?KEY:'*Alex*' -
>>> list1 = ["Alex", "is", "handsome"]
>>> "_".join(list1)输出结果是_______？KEY:'Alex_is_handsome' -
>>> 'www.oldboyedu.com'.replace('w', '*', 1)
结果是_______?KEY:'*ww.oldboyedu.com' -
>>> 'www.oldboyedu.com'.split('.', 1)
结果是_______?KEY:['www', 'oldboyedu.com'] -
>>> 'www.oldboyedu.com'.partition('.')
结果是_______?KEY:('www', '.', 'oldboyedu.com') -
>>> 'www.oldboyedu.com'.strip('zaw.')
结果是_______?KEY:'oldboyedu.com' -
>>> list1 = [4,1,5,3,2]
>>> list2 = list1.sort()>>> list2结果是_______?KEY:None -
>>> list1 = [4,1,5,3,2]
>>> list2 = sorted(list1)>>> list2输出结果是_______？KEY:[1, 2, 3, 4, 5] -
>>> list2 = sorted(list1, reverse=True)
>>> list2输出结果是_______？KEY:[5, 4, 3, 2, 1] -
>>> list1 = [1, 3, 5, 2, 4]
>>> list1 = list1[::-1]>>> list1结果是？KEY:[4, 2, 5, 3, 1] -
>>>list1=[[]]*2
>>>list1[[], []]>>>id(list1[0])==id(list1[1])结果是？KEY:True（列表复制其实复制的是引用） -
>>>list1=[[] for i in range(2)]
>>>list1[[], []]>>>id(list1[0])==id(list1[1])结果是？KEY:False（重新生成了列表） -
>>> list1 = [1, 2, 3, 6, 7]
>>> min(list1, key=lambda x: x%2)结果是_______?KEY:2 -
>>> list1 = [1, 2, 3, 6, 7]
>>> max(list1, key=lambda x: x%2)结果是_______?KEY:1 -
>>> list1 = [1, 3, 3, 5, 7]
>>> set(list1)结果是？KEY:{1, 3, 5, 7} -
>>> divmod(99, 2)
结果是？KEY:(49，1) -
>>>num="四"
>>>num.isdigit()False>>>num._______()True_______ 上应填？KEY:isnumeric -
>>> result = 1 if 'a'>'b' else 2
>>> result结果是？KEY:2 -
>>> dict1 = {"a": 1, "b": 2}
>>> result = dict1.get("c")>>> print(result)结果是？KEY:None -
>>> list1 = [1, 3, 2, 6, 5]
>>> list1.sort(_______)>>> list1[6, 5, 3, 2, 1]_______ 上应填？KEY:reverse=True -
>>> list1=[1, 2, 3]
>>> list2=list1.reverse()>>> print(list2)打印的结果为_______?
KEY:None -
>>> list1=[1, 2, 3]
>>> list2=list1_______>>> list2[3, 2, 1]_______ 上应填写什么内容?
KEY:[::-1]
-
下面选项中，不能创建字典的语句是( )
A.dict1 = {}B.dict2 = {1: 2}C.dict3 = {[1]: 2}D.dict4 = {(1): 2}KEY:C -
>>> dict1 = {'a': 1,'b': 2}
>>> dict1.setdefault('c', 3)>>> dict1['c']结果为______？KEY:3 -
>>> dict1 = {"a": 1, "b": 2}
>>> list(dict1)上述代码的输出结果是_______？
KEY:["a", "b"] -
>>> nums={1, 2, 2, 3, 4, 4, 5}
>>> len(nums)结果是_____？KEY:5 -
for i in range(2):
print(i)for j in range(4, 6): print(j)上述代码执行的结果是____?
A:12456 B:01456 C:0145 D:2456
KEY:C -
>>> list1 = [1, 3, 5, 7]
>>> for i in list1:... if i > 6:... break... else:... print(i, end="")... else:... print("over", end="")上述代码输出的结果是_______?KEY:135 -
>>> import copy
>>> a = [1, 2, 3, ["a", "b", "c"]]>>> b = a>>> c = copy.copy(a)>>> d = copy.deepcopy(a)>>> (id(a) == id(b), id(a) == id(c), id(a) == id(d), id(a[0]) == id(c[0]), id(a[0]) == id(d[0]), id(a[3]) == id(c[3]), id(a[3]) == id(d[3]))结果为________？A：(True, True, False, True, True, True, True)
B：(True, False, False, True, True, True, False)C：(True, False, False, False, False, False, False)D：(True, True, False, True, True, True, False)KEY:B -
>>> list1 = [1, 3, 5, 7, 9]
>>> a = _____(1, 3)>>> list1[1:3][3, 5]>>> list1[a][3, 5]_______ 上应填？KEY:slice -
>>> a = {1, 2, 3}
>>> b = {3, 4, 5}>>> a&b结果是_______?
KEY:{3} -
>>> a = {1, 2, 3}
>>> b = {3, 4, 5}>>> a|b结果是_______?
KEY:{1, 2, 3, 4, 5} -
>>> a = {1, 2, 3}
>>> b = {2, 3, 4}>>> a.update(b)>>> a结果是_______?KEY:{1, 2, 3, 4} -
python my.py a1 a2 形式运行脚本时,通过 from sys import argv 如何获得参数a2的值?
A.argv[0] B.argv[1] C.argv[2] D.argv[3]KEY:C -
以下哪个函数的参数定义非法?
A.def myfunc(*args):B.def myfunc(arg1=1):C.def myfunc(*args, a=1):D.def myfunc(a=1, **args):KEY:D
-
num = 10
def func(): num = 5func()print(num)输出的结果是_____?KEY:10 -
num = 10
def fun(): num = 5print(fun())输出的结果是_____？KEY:None -
def func1():
for i in range(1, 5): return idef func2(): for i in range(1, 5): yield i表达式 func1()+sum(func2()) 的值为____？
KEY:11 -
表达式 issubclass(bool, int) 的值为____？
KEY:True -
表达式 True + False 的值为____？
KEY:1 -
>>> f=open('test.txt','r')
>>> print(f.read())name:Alex>>> f.seek(5)
>>> print(f.read())打印的结果是_____？KEY:Alex
-
>>> list1 = [1, 3, 5]
>>> list2 = list(map(lambda x: x + 1, list1))>>> print(list2)打印的结果是_______?
KEY:[2, 4, 6] -
>>> list1 = [11, 33, 55]
>>> list2 = list(filter(lambda x: x > 22, list1))>>> print(list2)打印的结果是_______?
KEY:[33, 55] -
>>> from functools import reduce
>>> reduce(lambda x,y : x if x < y else y, [44,11,22,7,31]) 上述代码的输出结果为______？KEY:7
-
>>> from functools import reduce
>>> reduce(lambda x, y:x+y, [1, 2, 3, 4, 5],1)结果是_______?KEY:16 -
>>> file_path = "D:\Alex\demo.py"
>>> os.path.dirname(file_path)输出结果是_______？KEY:'D:\Alex' -
>>> import re
>>> ret=re.match('\d', 'a1b2c3')>>> print(ret)结果是_______？A:None B:1 C:123 D:[]KEY:A -
>>> list1 = list(range(1, 10, 2))
>>> list1结果是_______?KEY:[1, 3, 5, 7, 9]