使用python進行字符串插值

Question

我剛開始學習如何在字符串中使用字符串插值，並且在獲取要實際打印正確結果的示例時遇到了麻煩。

我試着做：

print "My name is {name} and my email is {email}".format(dict(name="Jeff", email="me@mail.com"))

它說KeyError: 'name'時出錯

然后我嘗試使用：

print "My name is {0} and my email is {0}".format(dict(name="Jeff", email="me@mail.com"))

它打印

My name is {'email': 'me@mail.com', 'name': 'Jeff'} and my email is {'email': 'me@mail.com', 'name': 'Jeff'}

因此，我嘗試這樣做：

print "My name is {0} and my email is {1}".format(dict(name="Jeff", email="me@mail.com"))

它錯誤地說IndexError: tuple index out of range

它應該給我以下輸出結果：

My name is Jeff and my email is me@mail.com

謝謝。

Answer 1

只需刪除對dict的調用即可：

>>> print "My name is {name} and my email is {email}".format(name="Jeff", email="me@mail.com")
My name is Jeff and my email is me@mail.com
>>>

這是有關字符串格式化的語法的參考。

Answer 2

您缺少[] （ getitem ）運算符。

>>> print "My name is {0[name]} and my email is {0[email]}".format(dict(name="Jeff", email="me@mail.com"))
My name is Jeff and my email is me@mail.com

或者不調用dict使用它

>>> print "My name is {name} and my email is {email}".format(name='Jeff', email='me@mail.com')
My name is Jeff and my email is me@mail.com