Fail to generate Indentation for a specific file and code copied from that file

[Ruiz-Reginald]

What the code looks like before pressing enter:

    def __init__(self, data=None, dim=None, init_value=0):
        if data != None: # 输入data不为空的情况
            self.data = data
            self.dim = (len(data), len(data[0]))
        elif dim == None: # data和dim全为空的情况
            raise ValueError("data和dim不能全为None")
        else: # data为空，dim和init_value决定矩阵的情况
            self.data = [[init_value for column_num in range(0, dim[1])] for row_num in range(0, dim[0])]|
            self.dim = dim```

What I want the code to look like after pressing `enter`:

```python
    def __init__(self, data=None, dim=None, init_value=0):
        if data != None: # 输入data不为空的情况
            self.data = data
            self.dim = (len(data), len(data[0]))
        elif dim == None: # data和dim全为空的情况
            raise ValueError("data和dim不能全为None")
        else: # data为空，dim和init_value决定矩阵的情况
            self.data = [[init_value for column_num in range(0, dim[1])] for row_num in range(0, dim[0])]
            self.dim = dim
                        |

What the code actually looks like after pressing enter:

    def __init__(self, data=None, dim=None, init_value=0):
        if data != None: # 输入data不为空的情况
            self.data = data
            self.dim = (len(data), len(data[0]))
        elif dim == None: # data和dim全为空的情况
            raise ValueError("data和dim不能全为None")
        else: # data为空，dim和init_value决定矩阵的情况
            self.data = [[init_value for column_num in range(0, dim[1])] for row_num in range(0, dim[0])]
            self.dim = dim
 |

before:

after:

[Ruiz-Reginald]

it's the file itself that causes the problem, after formatting the file, the problem is gone