# -*- coding: utf-8 -*-
s1 = 72 s2 = 85
r = (s2-s1)/s1*100
print(r)
print('小明成绩提升的百分点{0:.1f}'. format (r))
各位学友们，请问一下{0:.1f}%中的冒号（：）在这里是做什么用？
修改成逗号或者分号都是错误的
Traceback (most recent call last):
File "/home/pyodide/pyscript/_internal.py", line 104, in run_pyscript
result = eval_code(code, globals=__main__.__dict__)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/lib/python311.zip/_pyodide/_base.py", line 468, in eval_code
.run(globals, locals)
^^^^^^^^^^^^^^^^^^^^
File "/lib/python311.zip/_pyodide/_base.py", line 310, in run
coroutine = eval(self.code, globals, locals)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "<exec>", line 9, in <module>
KeyError: '0 ;'
这因为你用的是format格式，有序号{0}、{1}、{2}等等，{0:.1f},format(r)意思就是用r取代第一个需要被取代的值，并且它是小数点位数为1的浮点数。冒号应该是格式需求，进行解释说明。
谢谢，明白了，就当作是格式要求
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北极之城
# -*- coding: utf-8 -*-
s1 = 72
s2 = 85
r = (s2-s1)/s1*100
print(r)
print('小明成绩提升的百分点{0:.1f}'. format (r))
各位学友们，请问一下{0:.1f}%中的冒号（：）在这里是做什么用？
修改成逗号或者分号都是错误的
Traceback (most recent call last):
File "/home/pyodide/pyscript/_internal.py", line 104, in run_pyscript
result = eval_code(code, globals=__main__.__dict__)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/lib/python311.zip/_pyodide/_base.py", line 468, in eval_code
.run(globals, locals)
^^^^^^^^^^^^^^^^^^^^
File "/lib/python311.zip/_pyodide/_base.py", line 310, in run
coroutine = eval(self.code, globals, locals)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "<exec>", line 9, in <module>
KeyError: '0 ;'