Python：从多个字典列表中筛选空字符串

请问我怎样才能得出预期的结果。我用“如果”语句挣扎了一个小时，但什么也没发生

books = [{'title':'Angels and Demons'},{'title':''},{'title':'If'},{'title':'Eden'}]
authors = [{'author':'Dan Brown'},{'author':'Veronica Roth'},{'author':''},{'author':'James Rollins'}]

for i, book in enumerate(books):
    print(book, authors[i])

---

这应该行得通

---

这应该可以

您想要的可能是排除标题或作者为空字符串的对

books = [{'title':'Angels and Demons'},{'title':''},{'title':'If'},{'title':'Eden'}]
authors = [{'author':'Dan Brown'},{'author':'Veronica Roth'},{'author':''},{'author':'James Rollins'}]

for book, author in zip(books, authors):
    if book["title"] and author["author"]:
        print(book, author)

# or 

[(book, author) for book, author in zip(books, authors) if book["title"] and author["author"]]

---

您想要的可能是排除标题或作者为空字符串的对

books = [{'title':'Angels and Demons'},{'title':''},{'title':'If'},{'title':'Eden'}]
authors = [{'author':'Dan Brown'},{'author':'Veronica Roth'},{'author':''},{'author':'James Rollins'}]

for book, author in zip(books, authors):
    if book["title"] and author["author"]:
        print(book, author)

# or 

[(book, author) for book, author in zip(books, authors) if book["title"] and author["author"]]

使用列表压缩

 [(books[i],authors[i]) for i,v in enumerate(books) if books[i]['title']  and authors[i]['author']]

输出：

 [({'title': 'Angels and Demons'}, {'author': 'Dan Brown'}), ({'title': 'Eden'}, {'author': 'James Rollins'})]

使用列表压缩

 [(books[i],authors[i]) for i,v in enumerate(books) if books[i]['title']  and authors[i]['author']]

输出：

 [({'title': 'Angels and Demons'}, {'author': 'Dan Brown'}), ({'title': 'Eden'}, {'author': 'James Rollins'})]

---

一行代码解决您的问题

In [3]: [(book, author) for book, author in zip(books,authors) if book['title'] and author['author']]
Out[3]: 
[({'title': 'Angels and Demons'}, {'author': 'Dan Brown'}),
 ({'title': 'Eden'}, {'author': 'James Rollins'})]

---

一行代码解决您的问题

In [3]: [(book, author) for book, author in zip(books,authors) if book['title'] and author['author']]
Out[3]: 
[({'title': 'Angels and Demons'}, {'author': 'Dan Brown'}),
 ({'title': 'Eden'}, {'author': 'James Rollins'})]

---

您的代码甚至没有if语句。如果你解释得不好，我们怎么帮你？请阅读详细信息您的代码甚至没有if语句。如果你解释得不好，我们怎么帮你？请阅读详细信息，这是我要找的。谢谢。是的，这就是我要找的。谢谢。如果有很多值，您可以使用

generator

，以便更好地优化内存。如果有很多值，您可以使用

generator

，以便更好地优化内存。