字典输出的是空？

Question

test4.txt

test_simi.txt

对于每个test4.txt中的单词，按照一定的规则在test_simi.txt中找对应的值，写了以下代码，可是输出却是空，该怎么解决？

#!/usr/bin/python
#coding:utf-8
# import os
#连接单词的首字母
def cat_first(concept_list):
    first_alpha = []
    lenth_concept=len(concept_list)
    for i in concept_list[0:lenth_concept]:
        first_alpha.append(i[0])
        x = 0
        for i in first_alpha[:len(first_alpha)]:
            if i.isupper():
                x += 1
        if x == len(first_alpha):
            first_cat = ''.join(first_alpha)
            return first_cat

if __name__ == '__main__':
    with open('test4.txt','r') as f,open('test_simi.txt','r') as c:
        for line in f:
            for word in line.split():
                # word_simi={}
                word1 = word.capitalize()
                word_list = []
                word_list.append(word)
                word_list.append(word1)
                for word in word_list[:len(word_list)]:
                    label_simi = {}
                    # item_word_simi = {}
                    for line1 in c:
                        line_list=[]
                        for item in line1.split():
                            line_list.append(item)
                            # for label,concept,RE,X_Similarity in line_list[0:4]:
                        label=line_list[0]
                        concept=line_list[1]
                        RE=line_list[2]
                        X_Similarity=line_list[3]
                        concept_list=[]
                        for item in concept.split('_'):
                            if item == 'of':
                                pass
                            else:
                                concept_list.append(item)
                        lenth_concept = len(concept_list)
                        for item in concept_list[:lenth_concept]:
                            if len(word) <= 6:
                                if lenth_concept <= 2:
                                    if len(item) <= 6:
                                        if word==item:
                                            label_simi.update({label:RE})
                                    else:
                                        part_item=item[:6]
                                        if word==part_item:
                                            label_simi.update({label: RE})
                                else:
                                    # part_word = word[:5]
                                    first_cat=cat_first(concept_list)
                                    if word == first_cat:
                                        label_simi.update({label: RE})
                            else:
                                if lenth_concept <= 2:
                                    # for item in concept_list[:lenth_concept]:
                                    if len(item) <= 6:
                                        part_word = word[:5]
                                        if part_word == item:
                                            label_simi.update({label: RE})
                                    else:
                                        part_word = word[:5]
                                        part_item = item[:5]
                                        if part_word == part_item:
                                            label_simi.update({label: RE})
                                else:
                                    part_word = word[:5]
                                    first_cat = cat_first(concept_list)
                                    if part_word == first_cat:
                                        label_simi.update({label: RE})
                    print label_simi