Python学习笔记之错误和异常及访问错误消息详解

try:
  # some code
except ValueError:
  # some code

try:
  # some code
except (ValueError, KeyboardInterrupt):
  # some code

try:
  # some code
except ValueError:
  # some code
except KeyboardInterrupt:
  # some code

def create_groups(items, num_groups):
  try:
    size = len(items) // num_groups
  except ZeroDivisionError:
    print("WARNING: Returning empty list. Please use a nonzero number.")
    return []
  else:
    groups = []
    for i in range(0, len(items), size):
      groups.append(items[i:i + size])
    return groups
  finally:
    print("{} groups returned.".format(num_groups))
print("Creating 6 groups...")
for group in create_groups(range(32), 6):
  print(list(group))
print("\nCreating 0 groups...")
for group in create_groups(range(32), 0):
  print(list(group))

try:
  # some code
except ZeroDivisionError as e:
  # some code
  print("ZeroDivisionError occurred: {}".format(e))

try:
  # some code
except Exception as e:
  # some code
  print("Exception occurred: {}".format(e))