類型錯誤： '海峽' 對象不是可調用的，而在循環中調用函數

Question

def gain(info,decision_class,unique_info,unique_class): 
gain=info[0] 
info.append(decision_class) 
del info[0],decision_class[0],unique_info[0],unique_class[0] 

count=[] 
count_yes_no=[] 
temp=0 
temp1=0 
for i in range(len(unique_info)): 
    temp=0 
    temp1=0 
    for j in range(len(info)): 
     if(unique_info[i]==info[j]): 
      temp=temp+1 
    count.append(temp) 


for i in range(len(unique_info)): 
#print unique_info[i] 
    for k in range(len(unique_class)): 
    #print unique_class[k] 
     temp1=0 
     for l in range(len(info)-1): 
      #print info[l] 
      if(unique_info[i]==info[l]): 
       #print str(unique_info[i])+"=="+str(info[l]) 
       if(unique_class[k]==info[14][l]): 
        #print unique_class[k]unique_info[i] 
        temp1=temp1+1 
     count_yes_no.append(temp1) 


d=sum(count) 
pointer=0 
final=[] 
for i in range(len(count)): 
    x=(count[i]/d) 
    y=(count_yes_no[pointer]/count[i]) 
    z=(count_yes_no[pointer+1]/count[i]) 
    if(y!=0): 
     l1=math.log(y,2) 
    else: 
     l1=0 
    if(z!=0): 
     l2=math.log(z,2) 
    else: 
     l2=0 
    f=x*(-y*l1-z*l2) 
    final.append(f) 
    #print x,y,z,f 
    pointer = int(pointer+len(count_yes_no)/len(count)) 
#print "\nInfo("+gain+") \n"+str(sum(final)) 
return sum(final),gain 
#print gain,info, decision_class, unique_info ,count ,unique_class 
#print info 
#print count,count_yes_no,d 
data=get_data()  
info,unique_info,counts=get_info(data)  
entropy=entropy(unique_info,counts) 
for i in range(len(info)-1):  
      info_gain,gain=gain(info[i],info[len(info)-1],unique_info[i],unique_info[len(unique_info)-1]) 
    print "Info("+gain+") ",info_gain 

顯示的錯誤是

熵
0.940285958671 信息（年齡）0.693536138896

Traceback (most recent call last): 
    File "G:\test.py", line 113, in <module> 
    info_gain,gain=gain(info[i],info[len(info)-1],unique_info[i],unique_info[len(unique_info)-1]) 
TypeError: 'str' object is not callable 
>>> 

Answer 1

您使用gain作爲函數和變量的名稱：

info_gain, gain = gain(... 
        ^^^^ function 
      ^^^^ variable 

爲它們指定不同的名稱，例如，將函數重命名爲compute_gain()。