我不明白为什么第一个示例无效，而第二个示例无效。它们是相同的代码，因此很高兴知道为什么它无法正常工作以寻求帮助。

def naive_bayes_eval(test_sms_file,f):
    Precision=1
    est_spam =0
    pas_spam =0
    nbr_spam =0

    for ligne in open(test_sms_file,'r').readlines():
        if("spam" in ligne):
            nbr_spam = nbr_spam + 1
            if f(ligne.replace('spam',''))== 1:
                est_spam=est_spam+1
        if("ham" in ligne):
            if( f(ligne.replace('ham',''))== 1):
                pas_spam = pas_spam+1
    recall = est_spam/nbr_spam;         
    if (est_spam + pas_spam)>0:
        Precision = est_spam/(est_spam + pas_spam)
    return(recall,Precision)

def naive_bayes_eval(test_sms_file,f):
    Precision=1
    est_spam =0
    pas_spam =0
    nbr_spam =0
    f=open(test_sms_file,'r')
    lines=f.readlines()
    for ligne in lines:
        if("spam" in ligne):
            nbr_spam = nbr_spam + 1
            if f(ligne.replace('spam',Precision)