如何修复python中无法解包的不可迭代错误

# 错误示例
value = 42
a, b = value  # 这里会报错，因为整数不是可迭代对象

# 正确示例
value = [42, 43]
a, b = value  # 正确，因为列表是可迭代对象

from collections.abc import Iterable

def safe_unpack(iterable, num_vars):
    if isinstance(iterable, Iterable) and len(iterable) == num_vars:
        return tuple(iterable)
    else:
        raise ValueError("Cannot unpack non-iterable or mismatch in number of variables")

try:
    result = safe_unpack([1, 2], 2)
    a, b = result
    print(a, b)  # 输出: 1 2
except ValueError as e:
    print(e)

data = [1, 2, 3, 4]
a, b, *rest = data
print(a, b, rest)  # 输出: 1 2 [3, 4]

try:
    a, b = some_function_that_returns_an_iterable()
except TypeError as e:
    print(f"Error: {e}")
    # 进行错误处理