# Python基础练习100题 ( 71~ 80）

Question 71:
Please write a program to output a random number, which is divisible by 5 and 7, between 10 and

Question 71: Please write a program to output a random number, which is divisible by 5 and 7, between 10 and 150 inclusive using random module and list comprehension. 解法一
``````import random
print (random.choice([i for i in range(10,151) if i%5==0 and i%7==0]))``````

``````import random
resp = [i for i in range(10,151) if i % 35 == 0 ]
print(random.choice(resp))``````
Question 72: Please write a program to generate a list with 5 random numbers between 100 and 200 inclusive. 解法一
``````import random
resp = random.sample(range(100,201),5)
print(resp)``````
Question 73: Please write a program to randomly generate a list with 5 even numbers between 100 and 200 inclusive. 解法一
``````import random
numbers = random.sample(range(100,201,2),5)
print(numbers)``````

``````import random
print (random.sample([i for i in range(100,201) if i%2==0], 5))
``````
Question 74: Please write a program to randomly generate a list with 5 numbers, which are divisible by 5 and 7 , between 1 and 1000 inclusive. 解法一
``````import random
lst = [i for i in range(1,1001) if i%35 == 0]
resp = random.sample(lst,5)
print(resp)``````
Question 75: Please write a program to randomly print a integer number between 7 and 15 inclusive. 解法一
``````import random
number= random.choice([x for x in range(7,16)])
print(number)``````

``````import random
print(random.randrange(7,16))``````
Question 76: Please write a program to compress and decompress the string "hello world!hello world!hello world!hello world!". 解法一
``````import zlib
s = 'hello world!hello world!hello world!hello world!'.encode()
t = zlib.compress(s)
print(t)
print(zlib.decompress(t))``````
Question 77: Please write a program to print the running time of execution of "1+1" for 100 times. 解法一
``````from timeit import Timer
t = Timer("for i in range(100):1+1")
t.timeit()``````

``````import time
before = time.time()
for i in range(100):
x = 1 + 1
after = time.time()
execution_time = after - before
print(execution_time)``````
Question 78: Please write a program to shuffle and print the list [3,6,7,8]. 解法一
``````import  random
lst  =  [3,6,7,8]
random.shuffle(lst)
print(lst) ``````

``````import random
lst = [3,6,7,8]
seed = 7
random.Random(seed).shuffle(lst)
print(lst)
``````
Question 79: Please write a program to generate all sentences where subject is in ["I", "You"] and verb is in ["Play", "Love"] and the object is in ["Hockey","Football"]. 解法一
``````subjects=["I", "You"]
verbs=["Play", "Love"]
objects=["Hockey","Football"]

res = [[i, j, k] for i in subjects
for j in verbs
for k in objects]
for x in res:
print(" ".join(x))

Out:

I Play Hockey
I Play Football
I Love Hockey
I Love Football
You Play Hockey
You Play Football
You Love Hockey
You Love Football``````

``````
subjects=["I", "You"]
verbs=["Play", "Love"]
objects=["Hockey","Football"]

for sub in subjects:
for verb in verbs:
for obj in objects:
print("{}  {}  {}".format(sub,verb,obj))
Out:
I Play Hockey
I Play Football
I Love Hockey
I Love Football
You Play Hockey
You Play Football
You Love Hockey
You Love Football
``````

``````
import itertools

subjects=["I", "You"]
verbs=["Play", "Love"]
objects=["Hockey","Football"]
all_list = [subjects,verbs,objects]

res = list(itertools.product(*all_list))
for x in res:
print(" ".join(x))

Out:
I Play Hockey
I Play Football
I Love Hockey
I Love Football
You Play Hockey
You Play Football
You Love Hockey
You Love Football``````
Question 80: Please write a program to print the list after removing even numbers in [5,6,77,45,22,12,24]. 解法一
``````def isEven(n):
return n%2!=0

li = [5,6,77,45,22,12,24]
lst = list(filter(isEven,li))
print(lst)``````

``````li  =  [5,6,77,45,22,12,24]  lst  =  list(filter(lambda  n:n%2!=0,li))
print(lst)``````

Python 71 - 80题

raw_input()在Python3中是input() print需要加括号 fstring可以换成.format(),或者%s，%d