python flask render_template

Question

Could someone explain why friend = friend is necessarily in this flask function?

@app.route('/')
def index():
    friends = mysql.fetch("SELECT * FROM friends")
    return render_template('index.html', friends=friends)

Answer 1

In your template you have a variable called friends . This code says use the friends results in the template as friends .

Answer 2

它将好友列表传递到模板中，以便可以显示数据。

Answer 3

I think what you are asking is why do you have to say "friends = friends" instead of just passing "friends". Why the superfluous "friends"? The way to think about it is you are passing a keyword argument, which means defining a keyword and its value like so: "keyword = value". You might find this helpful from the Python docs .