将字符串放在字符串中

Question

我想做些

print("hello, your name is [name]")

但我不想这样做

print("hello, your name is "+name) 

因为我希望能够将[name]放在字符串中的任何位置。

在python中有什么方法吗？

Answer 1

选项1，旧样式格式。

>>> name = 'Jake'
>>> print('hello %s, have a great time!' % name)
hello Jake, have a great time!

选项2，使用str.format。

>>> print('hello {}, have a great time!'.format(name))
hello Jake, have a great time!

选项3，字符串连接。

>>> print('hello ' + name + ', have a great time!')
hello Jake, have a great time!

选项4，格式字符串（自Python 3.6起）。

>>> print(f'hello {name}, have a great time!')
hello Jake, have a great time!

选项2和4是preferred。要全面了解Python字符串格式，请查看pyformat.info。

Answer 2

print(f"hello, your name is {name}")

它称为f字符串：https://docs.python.org/3/reference/lexical_analysis.html#f-strings

还有其他方法。

Answer 3

这称为字符串格式：print('Hello, my name is {}'.format(name))

您还可以做一些更复杂的事情：

print('Hello, my name is {0}, and here is my name again {0}'.format(name)'

Answer 4

在python3.6中，您可以使用f字符串：

print(f'your name is {name}')

或者您可以使用格式：

print('your name is {}'.format(name))

Answer 5

print("hello, your name is %s" % ('name'))也对您有用。

您可以将其扩展到更多变量，例如：

>>> print("%s, your name is %s" % ('hello', 'name'))
hello, your name is name