Exam Part I

n=0
for i in range(1,100):
        if(i%2==1):
            n=n+1/i
        else:
            n=n-1/i
print(n)            

1

 

from random import radint
RollResult=[]
for i in range(100):
    roll=radint(1,6)
    RollResult.append(roll)
RollFrequecity=[]
for j in range(1,6):
    frequecity=RollResult.count(j)
    RollFrequecity.append(frequecity)
print(frequecity)

2，检测到

ImportError: cannot import name 'radint' from 'random' (d:\program files (x86)\py\lib\random.py)

     而无法显示结果。

 

 

 

from numpy import random
sum=0
array=[]
random.randint(1,100,size=(3,3))

3

import csv
import jieba
with open("weather.csv",'r') as f:    
    reader = csv.reader(f)    
    fieldnames = next(reader)
words=jieba.lcut
counts={}
for word in words:
    if len(word) == 1:
        continue
    elif:
        word = "重度污染"
    elif:
        word = "轻度污染"
    elif:
        word = "中度污染"
    elif:
        word = "优"
    elif:
        word = "良"
    counts[rword] = counts.get(rword,0) + 1 
    else:
    del(counts[word])
items = list(counts.items())