遇到 Exception 但不知道哪邊或是 root cause
發現 stackprinter 真的是很棒
來看看範例
import stackprinter
a = [10, 4, 3, 9, 22, "0"]
try:
b = [i for i in a if 100 % i == 0]
except Exception as e:
print(e)
stackprinter.show()
執行後顯示
unsupported operand type(s) for %: 'int' and 'str'
File "U:/PY/practice/exception.py", line 12, in <module>
8 # with stackprinter.TracePrinter(style='darkbg2'):
9 # b = [i for i in a if 100 % i == 0]
10
11 try:
--> 12 b = [i for i in a if 100 % i == 0]
13
..................................................
a = [10, 4, 3, 9, 22, '0', ]
..................................................
File "U:/PY/practice/exception.py", line 12, in <listcomp>
8 # with stackprinter.TracePrinter(style='darkbg2'):
9 # b = [i for i in a if 100 % i == 0]
10
11 try:
--> 12 b = [i for i in a if 100 % i == 0]
13
..................................................
i = '0'
a = [10, 4, 3, 9, 22, '0', ]
..................................................
TypeError: unsupported operand type(s) for %: 'int' and 'str'
如果 還沒 try except 更推薦用
with stackprinter.TracePrinter(style='darkbg2'):
something()
結果顯示如下 (雖然有點攏長，但是色彩很棒~)
File "U:/PY/practice\exception.py", line 9, in <module>
5
6 a = [10, 4, 3, 9, 22, "0"]
7
8 with stackprinter.TracePrinter(style='darkbg2'):
--> 9 b = [i for i in a if 100 % i == 0]
10
..................................................
a = [10, 4, 3, 9, 22, '0', ]
stackprinter.TracePrinter = <class 'stackprinter.tracing.TracePrinter'>
..................................................
└──┐
File "U:/PY/practice\exception.py", line 9, in <listcomp>
5
6 a = [10, 4, 3, 9, 22, "0"]
7
8 with stackprinter.TracePrinter(style='darkbg2'):
--> 9 b = [i for i in a if 100 % i == 0]
10
..................................................
a = [10, 4, 3, 9, 22, '0', ]
stackprinter.TracePrinter = <class 'stackprinter.tracing.TracePrinter'>
..................................................
File "U:/PY/practice\exception.py", line 9, in <listcomp>
5
6 a = [10, 4, 3, 9, 22, "0"]
7
8 with stackprinter.TracePrinter(style='darkbg2'):
--> 9 b = [i for i in a if 100 % i == 0]
10
..................................................
a = [10, 4, 3, 9, 22, '0', ]
stackprinter.TracePrinter = <class 'stackprinter.tracing.TracePrinter'>
i = '0'
..................................................
TypeError: unsupported operand type(s) for %: 'int' and 'str'
File "U:/PY/practice\exception.py", line 9, in <module>
5
6 a = [10, 4, 3, 9, 22, "0"]
7
8 with stackprinter.TracePrinter(style='darkbg2'):
--> 9 b = [i for i in a if 100 % i == 0]
10
..................................................
a = [10, 4, 3, 9, 22, '0', ]
stackprinter.TracePrinter = <class 'stackprinter.tracing.TracePrinter'>
..................................................
File "U:/PY/practice\exception.py", line 9, in <listcomp>
5
6 a = [10, 4, 3, 9, 22, "0"]
7
8 with stackprinter.TracePrinter(style='darkbg2'):
--> 9 b = [i for i in a if 100 % i == 0]
10
..................................................
a = [10, 4, 3, 9, 22, '0', ]
stackprinter.TracePrinter = <class 'stackprinter.tracing.TracePrinter'>
i = '0'
..................................................
TypeError: unsupported operand type(s) for %: 'int' and 'str'