init: 博特维采购订单系统 v1.0 源码

po_app/amount_cn.py

@@ -0,0 +1,89 @@
+# -*- coding: utf-8 -*-
+"""人民币金额转中文大写。"""
+
+
+def amount_to_cn(amount):
+    """1234.56 -> 壹仟贰佰叁拾肆元伍角陆分"""
+    digits = u"零壹贰叁肆伍陆柒捌玖"
+    units = [u"", u"拾", u"佰", u"仟"]
+    big_units = [u"", u"万", u"亿", u"兆"]
+
+    try:
+        amount = round(float(amount) + 0.0, 2)
+    except (TypeError, ValueError):
+        return u"零元整"
+
+    negative = amount < 0
+    amount = abs(amount)
+    integer_part = int(amount)
+    # 避免浮点误差：分位用字符串处理
+    fen = int(round((amount - integer_part) * 100))
+    if fen == 100:
+        integer_part += 1
+        fen = 0
+
+    def int_section(num):
+        """0-9999 转中文"""
+        s = u""
+        zero_flag = False
+        str_num = "%04d" % num
+        for i, ch in enumerate(str_num):
+            d = int(ch)
+            pos = 3 - i
+            if d == 0:
+                zero_flag = True
+            else:
+                if zero_flag and s:
+                    s += digits[0]
+                zero_flag = False
+                s += digits[d] + units[pos]
+        return s
+
+    if integer_part == 0:
+        result = u""
+    else:
+        sections = []
+        n = integer_part
+        while n > 0:
+            sections.append(n % 10000)
+            n //= 10000
+        parts = []
+        for idx, sec in enumerate(sections):
+            if sec == 0:
+                parts.append(u"")
+                continue
+            parts.append(int_section(sec) + big_units[idx])
+        result = u""
+        for idx in range(len(parts) - 1, -1, -1):
+            p = parts[idx]
+            if not p:
+                if result and not result.endswith(digits[0]):
+                    result += digits[0]
+                continue
+            if result and idx < len(parts) - 1 and sections[idx] < 1000:
+                result += digits[0]
+            result += p
+        result = result.rstrip(digits[0]) or u"零"
+
+    if fen == 0:
+        result += u"元整" if result else u"零元整"
+    else:
+        jiao = fen // 10
+        f = fen % 10
+        if result:
+            result += u"元"
+        if jiao:
+            result += digits[jiao] + u"角"
+        elif f and result:
+            result += digits[0]
+        if f:
+            result += digits[f] + u"分"
+    if negative:
+        result = u"负" + result
+    return result
+
+
+if __name__ == "__main__":
+    for v in (0, 0.05, 0.5, 1, 10, 100.5, 1234.56, 10000, 1002003, 20340.07,
+              100000000, 10500.5):
+        print(v, amount_to_cn(v))