如何根據用戶輸入將從字典中的值從最高值降到最低值

Question

我在字典中具有特定的值，可以從高到低排序，但可以有多達一千或更多的值。如果一個數字在1-10之間，並且在圖表中輸出一個圖表的前1-10個最高值，那麼如何處理用戶輸入。所以，如果他們輸入3，將繪製在先進

from collections import Counter 
from scipy import * 
from matplotlib.pyplot import * 
import matplotlib.pyplot as plot 


frequency1 = Counter({'1':100,'2':400,'3':200,'4':300,}) 



response1 = input("How many top domains from source? Enter a number between 1-10: ") 

if response1 == "1":   
    if len(frequency1) >= 1: 

     print("\nTop 1 most is:") 
     for key, frequency1_value in frequency1.most_common(1): 
       print("\nNumber:",key,"with frequency:",frequency1_value) 

       ########Graph for this output 

       x = [1,2] 
       y = [frequency1_value,0] 

       figure(1) 

       ax = plot.subplot(111) 
       ax.bar(x,y,align='center', width=0.2, color = 'm') 


       ax.set_xticklabels(['0', '1']) 
       xlabel("This graph shows amount of protocols used") 
       ylabel("Number of times used") 
       grid('on')  


################################## END GRAPH 
    else: 
     print("\nThere are not enough domains for this top amount.") 

if response1 == "2":   
    if len(frequency1) >= 2: 
     print("\nTop 2 most is:") 
     for key, frequency1_value in frequency1.most_common(2): 
       print("\nNumber:",key,"with frequency:",frequency1_value) 

       ########Graph for this output 

       x = [1,2,3] 
       y = [frequency1_value,frequency1_value,0] 

       figure(1) 

       ax = plot.subplot(111) 
       ax.bar(x,y,align='center', width=0.2, color = 'm') 


       ax.set_xticklabels(['0', '1','','2']) 
       xlabel("This graph shows amount of protocols used") 
       ylabel("Number of times used") 
       grid('on')  


################################## END GRAPH 

    else: 
     print("\nThere are not enough domains for this top amount.") 

Answer 1

代碼中的3個最高值等等...謝謝下面將創建在字典中值的排序列表，然後繪製的最大對應的圖數字，取決於用戶輸入。

import numpy as np 
import matplotlib.pyplot as plt 

d = {'1':100,'2':400,'3':200,'4':300,} 

vals = sorted(d.values(), reverse=True) 

response = input("How many top domains from source? Enter a number between 1-10: ") 

if response > 0 and response < len(vals)+1: 

    y = vals[:response] 

    print ("\nTop %i most are:" %response) 
    print (y) 

    x = np.arange(1,len(y)+1,1) 

    fig, ax = plt.subplots() 

    ax.bar(x,y,align='center', width=0.2, color = 'm') 

    ax.set_xticks(x) 
    ax.set_xticklabels(x) 
    ax.set_xlabel("This graph shows amount of protocols used") 
    ax.set_ylabel("Number of times used") 
    ax.grid('on') 
else: 
    print ("\nThere are not enough domains for this top amount.") 

plt.show() 

例如，如果用戶輸入3到代碼，下圖將與輸出端產生：

Top 3 most are: 
[400, 300, 200]