Python f 字符串未格式化对象的空格属性

Question

我有一个名为 key 的属性对象并使用 f-string 我想将其格式化为在字符串左侧有 8 个空格。

这是一个例子：

object = {}

object['key'] = 'JIRA-123'

print(f"{object['key']:>8} should be 8 spaces to the right.")
print(f"{'But':>8} it isn't 8 spaces to the right.")

当这是运行时，这是输出：

JIRA-123 should be 8 spaces to the right.
     But it isn't 8 spaces to the right.

当我期望的输出是：

     JIRA-123 should be 8 spaces to the right.
     But it isn't 8 spaces to the right.

你可以试试here。

Answer 1

正如@Stephen Rauch 在评论中提到的，您对格式感到困惑。这是解释希望你会发现有帮助。

>>> len('But')
>>> 3
>>> f"{'But':>8}" # output will be 8 characters wide 
>>> '     But'    # Since len of But is 3 left 5 length will be filled out by whitespaces in left
>>> object['key'] = 'JIRA-123'
>>> len(object['key'])
>>> 8
>>> f"{object['key']:>8}" # output will be 8 characters wide 
>>> 'JIRA-123'            # since length is already of 8 no whitespaces in left

Python f 字符串未格式化对象的空格属性

Python f-string not formatting whitespace for object property

python

string-formatting

Python f 字符串未格式化对象的空格 属性

Python f-string not formatting whitespace for object property

python

string-formatting

Python f 字符串未格式化对象的空格属性