[Python] TypeError: unsupported operand type(s) for /: 'str' and 'float'

[Python] TypeError: unsupported operand type(s) for /: ‘str’ and ‘float’

输入：
rmb_str_value = input(‘请输入人民币(CNY)金额：’)

rmb_value = eval(rmb_str_value)

usd_vs_rmb = 6.77

usd_value = rmb_str_value / usd_vs_rmb

print(‘美元（USD）金额是：’, usd_value)

运行：
TypeError: unsupported operand type(s) for /: ‘str’ and ‘float’

解决：

rmb_str_value为字符类型，替代为 rmb_value为数字，done.