In the work, you can often encounter the problem of converting the case of the RMB amount. Here is a script for converting the RMB case using Python3. The actual test is available and accurate. It supports the conversion of the amount within 16 digits.
The script is as follows, you can enter the lowercase amount for verification after starting locally:
# handleCNY.py
class ChangeCNY(object):
NUM_DICT = {
'0': '零',
'1': '壹',
'2': '贰',
'3': '叁',
'4': '肆',
'5': '伍',
'6': '陆',
'7': '柒',
'8': '捌',
'9': '玖',
'10': '拾',
'100': '佰',
'1000': '仟'
}
CN_TO_NUM = {
item[1]: item[0] for item in NUM_DICT.items()}
VALIDATE_CN = [item[1] for item in NUM_DICT.items()] + ['分', '角', '元', '拾', '佰', '仟', '万', '亿', '兆', '整']
MIN_CN = ['角', '分']
def validate(self, val, small=True):
'''金额验证器
args：
val str：输入的金额
small bool：小写金额为True，大写金额为False
returns：
str/tuple：返回一个验证后的字符串或列表，验证的是大写金额时返回字符串；否则返回小写金额元组(整数部分, 小数部分)
'''
err = ""
if not isinstance(val, str):
raise ValueError("传入的类型错误，期待一个字符串类型。")
if small:
target = val.split('.')
if len(target) > 2:
raise ValueError("传入的值错误，异常的小写金额。")
if len(target[0]) > 16:
raise ValueError("输入金额超限，无法计算。")
if len(target) > 1 and len(target[1]) > 2:
raise ValueError("传入的值错误，小数部分不能超过三位。")
for item in target:
if not item.isnumeric():
err = '传入的值错误，异常的小写金额。'
break
if err:
raise ValueError(err)
res = (target[0], target[1]) if len(target) > 1 else (target[0], 0)
return res
for s in val:
if s not in self.VALIDATE_CN:
err = '传入的值错误，异常的大写金额。'
if err:
raise ValueError(err)
return val
def small_to_big(self, small):
'''将小写金额转换成大写金额的方法
args：
small str：接收一个小写金额字符串
returns：
str：返回一个大写的人民币金额
'''
max, min = self.validate(val=small)
# 处理小数部分
if min:
min_str = ''
for index, num in enumerate(min):
min_str += '%s%s' % (self.NUM_DICT[num], self.MIN_CN[index])
else:
min_str = '整'
# 处理整数部分
big_str = ''
change_swap = ['', '拾', '佰', '仟']
unit_swap = ['元', '万', '亿', '兆']
for index, num in enumerate(max[::-1]):
if index%4 == 0:
change_swap[0] = unit_swap[index//4]
# 如果刚好关键位为0，那就是不给零，只给标志位
if num == '0':
big_str += change_swap[index%4]
continue
big_str += '%s%s' % (change_swap[index%4], self.NUM_DICT[num])
else:
if num == '0':
big_str += self.NUM_DICT[num]
continue
big_str += '%s%s' % (change_swap[index%4], self.NUM_DICT[num])
# 去掉多于的零
big_str = big_str[::-1]
# print(big_str)
tmp_str = ''
for i in range(len(big_str)):
if i == len(big_str):
continue
if big_str[i] == '零' and big_str[i+1] == '零':
continue
if big_str[i] == '零' and big_str[i+1] in unit_swap:
continue
tmp_str += big_str[i]
# 整合整数部分和小数部分返回
return tmp_str + min_str
def __call_handle_big(self, big_str):
'''一个用于处理整数大写金额的递归函数
args：
big_str str：接收一个大写的整数金额
returns：
str：返回一个小写的金额字符串
'''
min_ls = []
max_unit = ''
unit_swap = {
'元': 1, '万': 5, '亿': 9, '兆': 13}
for s in unit_swap:
if s in big_str:
if len(min_ls) < unit_swap[s]:
min_ls = ['' for _ in range(unit_swap[s])]
max_unit = s
if len(big_str.split(max_unit)) > 1:
front, back = big_str.split(max_unit)[0], big_str.split(max_unit)[1]
else:
front, back = big_str.split(max_unit)[0], []
tmp_ls = []
inner_ls = []
for cn in front:
if cn != '零':
inner_ls.append(self.CN_TO_NUM[cn])
else:
tmp_ls.append(inner_ls)
inner_ls = []
tmp_ls.append(inner_ls)
all_tp = 0
for need_calc in tmp_ls:
tp = 0
for i in range(len(need_calc)):
# 是最后一个数据，并且是奇数的时候
if i+1 == len(need_calc) and (i+1) % 2 != 0:
tp += int(need_calc[i])
if (i+1) % 2 == 0:
tp += int(need_calc[i]) * int(need_calc[i-1])
all_tp += tp
all_tp = str(all_tp)
if len(all_tp) != 4:
all_tp = ('0'*(4-len(all_tp))) + all_tp
if not back:
return all_tp
else:
return all_tp + self.__call_handle_big(back)
def big_to_small(self, big):
'''将大写金额转为小写金额的方法
args：
big str：接收一个大写金额字符串，支持有小数的金额
returns：
str：返回一个小写金额字符串
'''
big_str = self.validate(big, small=False)
# 初始化小数和整数部分
dec = ''
get_int = ''
if '整' in big_str:
get_int = self.__call_handle_big(big_str[:-1])
else:
# 处理小数部分
if big_str[-1] == '分':
dec = '.%s%s' % (self.CN_TO_NUM[big_str[-4]], self.CN_TO_NUM[big_str[-2]])
get_int = self.__call_handle_big(big_str[:-4])
else:
dec = '.%s' % (self.CN_TO_NUM[big_str[-2]])
get_int = self.__call_handle_big(big_str[:-2])
# 去掉整数前面多于的零
remove_index = 0
for s in get_int:
if s != '0':
break
remove_index += 1
res_small = get_int[remove_index:] + dec
return res_small
if __name__ == '__main__':
change = ChangeCNY()
while 1:
small = input('请输入小写金额(退出请输入q)：')
if small == 'q':
print('Bye...')
break
print(f'输入的金额：{
small}')
print(f'大写金额为：{
change.small_to_big(small)}')
print(f'再次变换为：{
change.big_to_small(change.small_to_big(small))}')
implement:
python handleCNY.py