"character_count={}# 计算每个字符的出现频率forcharintext:ifcharnotincharacter_count:character_count[char]=1else:character_count[char]+=1# 创建饼状图labels=character_count.keys()sizes=character_count.values()plt.pie(sizes,labels=labels,autopct='%1.1f%%',startangle=90)plt.axis('equal')# Equal...