发布时间:2019-06-22 23:47:03编辑:auto阅读(1664)
#【Python】计算当前文件夹下所有文件的大小 import os all_files = os.listdir(os.curdir) #os.curdir表示当前目录。也可使用'.' file_dict = dict() #声明一个空字典 for each_file in all_files: if os.path.isfile(each_file): #判断是否是文件 file_size = os.path.getsize(each_file) file_dict[each_file] = file_size for each in file_dict.items(): #以列表返回可遍历的(键, 值) 元组数组 print('%s\t%dBytes' % (each[0],each[1])) #小甲鱼课后习题30.4 def print_pos(key_dict): keys = key_dict.keys() keys = sorted(keys) #由于字典是无序的,我们这里对行数进行排序 for each_key in keys: print('关键字出现在第%s行,第%s个位置。' % (each_key,str(key_dict[each_key]))) def pos_in_line(line,key): pos = [] begin = line.find(key) while begin != -1: pos.append(begin + 1) begin = line.find(key,begin+1) return pos def search_in_file(file_name,key): with open(file_name) as f: count = 0 key_dict = dict() for each_line in f: count += 1 if key in each_line: pos = pos_in_line(each_line,key) key_dict[count] = pos return key_dict def search_files(key,detail): all_files = os.walk(os.getcwd()) #第一个为起始路径,第二个为起始路径下的文件夹,第三个是起始路径下的文件。 txt_files = [] for i in all_files: #直接打印all_files神马也不显示 for each_file in i[2]: if os.path.splitext(each_file)[1] == '.txt': #根据后缀判断是否为文本文件 each_file = os.path.join(i[0],each_file) txt_files.append(each_file) for each_txt_file in txt_files: key_dict = search_in_file(each_txt_file,key) if key_dict: print('======================') print('在文件【%s】中找到关键字【%s】' % (each_txt_file, key)) if detail in ['YES','Yes','yes']: print_pos(key_dict) key = input('请将该脚本放于待查找的文件夹内,请输入关键字:') detail = input('请问是否需要打印关键字%s在文件中的具体位置(YES/NO' % key) search_files(key,detail)
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