Language
Python
Compiler
CPython HEAD 3.8.0a1+
Options
$ python3 prog.py arr is 3.14159 2.71828 !
arr is 3.142 2.718 !
Traceback (most recent call last):
File "prog.py", line 21, in <module>
print('arr is {:.2f} !'.format(arr))
TypeError: unsupported format string passed to MyArray.__format__
Exit Code:
1