Python3 third

#About Module
#import sample_module.py
import sample_module

sample_module.fib(100)

print(sample_module.__name__)

from sample_module import fib
fib(100)

import math
print(math.pi)

#Exception
try:
    number = 1*100/0
    print(number)
except:
    print(‘error‘)

try:
    raise Exception(‘raise an exception!‘)
except Exception:
    print(‘error‘)

try:
    raise Exception
except:
    print(‘Exception‘)
finally:
    print(‘finished!‘)

#File 统计目录下 test.txt 文件
with open(r‘test.txt‘,‘r‘) as f:
   for line in f:
       print(line,end="")