在程序的某个时刻,我要求它接受用户的文本输入并根据它的逗号分隔文本,然后在txt文件中再次",".join
。我们的想法是拥有一个包含所有逗号分隔信息的列表。
问题在于,显然,当我",".join
时,它会用逗号分隔每个字符,所以如果我得到字符串info1,info2
,它就会分开,得到info1 | info2
,但是,当它再次加入时,它会像i,n,f,o,1,,,i,n,f,o,2,
那样结束,这是非常不合适的,因为它从txt文件中获取文本,以便稍后在程序中向用户显示。任何人都可以帮我吗?
categories = open('c:/digitalLibrary/' + connectedUser + '/category.txt', 'a')
categories.write(BookCategory + '\n')
categories.close()
categories = open('c:/digitalLibrary/' + connectedUser + '/category.txt', 'r')
categoryList = categories.readlines()
categories.close()
for category in BookCategory.split(','):
for readCategory in lastReadCategoriesList:
if readCategory.split(',')[0] == category.strip():
count = int(readCategory.split(',')[1])
count += 1
i = lastReadCategoriesList.index(readCategory)
lastReadCategoriesList[i] = category.strip() + "," + str(count).strip()
isThere = True
if not isThere:
lastReadCategoriesList.append(category.strip() + ",1")
isThere = False
lastReadCategories = open('c:/digitalLibrary/' + connectedUser + '/lastReadCategories.txt', 'w')
for category in lastReadCategoriesList:
if category.split(',')[0] != "" and category != "":
lastReadCategories.write(category + '\n')
lastReadCategories.close()
global finalList
finalList.append({"Title":BookTitle + '\n', "Author":AuthorName + '\n', "Borrowed":IsBorrowed + '\n', "Read":readList[len(readList)-1], "BeingRead":readingList[len(readingList)-1], "Category":BookCategory + '\n', "Collection":BookCollection + '\n', "Comments":BookComments + '\n'})
finalList = sorted(finalList, key=itemgetter('Title'))
for i in range(len(finalList)):
categoryList[i] = finalList[i]["Category"]
toAppend = (str(i + 1) + ".").ljust(7) + finalList[i]['Title'].strip()
s.append(toAppend)
categories = open('c:/digitalLibrary/' + connectedUser + '/category.txt', 'w')
for i in range(len(categoryList)):
categories.write(",".join(categoryList[i]))
categories.close()
答案 0 :(得分:8)
你应该传递''.join()
一个列表,而是传入一个字符串。
字符串也是序列,因此''.join()
将每个字符视为单独的元素:
>>> ','.join('Hello world')
'H,e,l,l,o, ,w,o,r,l,d'
>>> ','.join(['Hello', 'world'])
'Hello,world'