I'm using `logging.config.dictconfig()` and my formatter is:

```
'formatters': {
                'logfileFormat': {
                    'format': '%(asctime)s %(name)-12s: %(levelname)s %(message)s'
                }
            }

```

When there's an exception, I would like the formatter to show the error message, as well as print out the exec\_info. How do I alter the `format` to do this? Or do I need to implement my own formatter in code, and reference it here?
['https://Stackoverflow.com/questions/62993565', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/1724926/']
For me working nice if assign back output, but very similar method [`DataFrame.update`](http://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.update.html) working inplace:

```
df = df1.combine_first(df2)
print (df)
   Gen1  Gen2
0   5.0   1.0
1   4.0   2.0
2   3.0   3.0
3   2.0   4.0
4   1.0   5.0

```

---

```
df1.update(df2)
print (df1)
   Gen1  Gen2
0   5.0   1.0
1   4.0   2.0
2   3.0   3.0
3   2.0   4.0
4   1.0   5.0

```
`combine_first` returns a dataframe which has the change and not updating the existing dataframe so you should get the return dataframe

```
df1=df1.combine_first(df2)

```