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tax_example.py
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from decimal import Decimal, ROUND_HALF_UP, getcontext
import json
from tax.invoice.utils.other import calculate_tax
getcontext().prec = 28
def to_decimal(value):
return value if isinstance(value, Decimal) else Decimal(str(value))
def quantize(value, scale):
return to_decimal(value).quantize(Decimal("0." + "0" * scale), rounding=ROUND_HALF_UP)
def bcadd(a, b, scale=2):
return quantize(to_decimal(a) + to_decimal(b), scale)
def bcsub(a, b, scale=2):
return quantize(to_decimal(a) - to_decimal(b), scale)
def bcmul(a, b, scale=2):
return quantize(to_decimal(a) * to_decimal(b), scale)
def bcdiv(a, b, scale=2):
return quantize(to_decimal(a) / to_decimal(b), scale)
def normalize_totals(data):
for key in ("hjje", "hjse", "jshj"):
if isinstance(data.get(key), Decimal):
data[key] = float(data[key])
return data
"""
/**
* 含税金额计算示例
*
* 不含税单价 = 含税单价/(1+ 税率) noTaxDj = dj / (1 + sl)
* 不含税金额 = 不含税单价*数量 noTaxJe = noTaxDj * spsl
* 含税金额 = 含税单价*数量 je = dj * spsl
* 税额 = 税额 = 1 / (1 + 税率) * 税率 * 含税金额 se = 1 / (1 + sl) * sl * je
* hjse= se1 + se2 + ... + seN
* jshj= je1 + je2 + ... + jeN
* 价税合计 =合计金额+合计税额 jshj = hjje + hjse
*
*/
"""
"""
/**
* 含税计算示例1 无价格 无数量
* @link `https://fa-piao.com/fapiao.html?action=data1&source=github`
*
*/
"""
hsbz = 1
amount = 200
sl = 0.01
se = calculate_tax(amount, sl, bool(hsbz))
data = {
"hjje": Decimal("0"),
"hjse": Decimal("0"),
"jshj": Decimal("0"),
"fyxm": [
{
"fphxz": 0,
"hsbz": hsbz,
"spmc": "*软件维护服务*接口服务费",
"spbm": "3040201030000000000",
"je": float(amount),
"sl": sl,
"se": float(se),
}
],
}
for item in data["fyxm"]:
data["jshj"] = bcadd(data["jshj"], item["je"], 2)
data["hjse"] = bcadd(data["hjse"], item["se"], 2)
data["hjje"] = bcsub(data["jshj"], data["hjse"], 2)
data["hjje"] = float(data["hjje"])
data["hjse"] = float(data["hjse"])
data["jshj"] = float(data["jshj"])
print("含税计算示例1 无价格 无数量:")
print(json.dumps(data, ensure_ascii=False, indent=4))
print("---------------------------------------------")
"""
/**
* 含税计算示例2 有价格 有数量
* @link `https://fa-piao.com/fapiao.html?action=data3&source=github`
*
*/
"""
hsbz = 1
spsl = 1
dj = 2
sl = 0.03
spsl2 = 1
dj2 = 3
sl2 = 0.01
je = bcmul(dj, spsl, 2)
se = calculate_tax(je, sl, bool(hsbz))
je2 = bcmul(dj2, spsl2, 2)
se2 = calculate_tax(je2, sl2, bool(hsbz))
data = {
"hjje": Decimal("0"),
"hjse": Decimal("0"),
"jshj": Decimal("0"),
"fyxm": [
{
"fphxz": 0,
"hsbz": hsbz,
"spmc": "*水冰雪*一阶水费",
"spbm": "1100301030000000000",
"ggxh": "",
"dw": "吨",
"dj": dj,
"spsl": spsl,
"je": float(je),
"sl": sl,
"se": float(se),
},
{
"fphxz": 0,
"hsbz": hsbz,
"spmc": "*水冰雪*二阶水费",
"spbm": "1100301030000000000",
"ggxh": "",
"dw": "吨",
"dj": dj2,
"spsl": spsl2,
"je": float(je2),
"sl": sl2,
"se": float(se2),
},
],
}
for item in data["fyxm"]:
data["jshj"] = bcadd(data["jshj"], item["je"], 2)
data["hjse"] = bcadd(data["hjse"], item["se"], 2)
data["hjje"] = bcsub(data["jshj"], data["hjse"], 2)
data["hjje"] = float(data["hjje"])
data["hjse"] = float(data["hjse"])
data["jshj"] = float(data["jshj"])
print("含税计算示例2 有价格 有数量:")
print(json.dumps(data, ensure_ascii=False, indent=4))
print("---------------------------------------------")
"""
/**
* 含税计算示例3 有价格自动算数量 购买猪肉1000元,16.8元/斤
* @link `https://fa-piao.com/fapiao.html?action=data5&source=github`
*
*/
"""
hsbz = 1
amount = 1000
dj = 16.8
sl = 0.01
se = calculate_tax(amount, sl, bool(hsbz))
data = {
"hjje": Decimal("0"),
"hjse": Decimal("0"),
"jshj": Decimal("0"),
"fyxm": [
{
"fphxz": 0,
"hsbz": hsbz,
"spmc": "*肉类*猪肉",
"spbm": "1030107010100000000",
"ggxh": "",
"dw": "斤",
"dj": dj,
"spsl": float(bcdiv(amount, dj, 13)),
"je": float(amount),
"sl": sl,
"se": float(se),
}
],
}
for item in data["fyxm"]:
data["jshj"] = bcadd(data["jshj"], item["je"], 2)
data["hjse"] = bcadd(data["hjse"], item["se"], 2)
data["hjje"] = bcsub(data["jshj"], data["hjse"], 2)
data["hjje"] = float(data["hjje"])
data["hjse"] = float(data["hjse"])
data["jshj"] = float(data["jshj"])
print("含税计算示例3 有价格自动算数量 购买猪肉1000元,16.8元/斤:")
print(json.dumps(data, ensure_ascii=False, indent=4))
print("---------------------------------------------")
"""
/**
* 含税计算示例4 有数量自动算价格 购买接口服务1000元7次
* @link `https://fa-piao.com/fapiao.html?action=data7&source=github`
*
*/
"""
hsbz = 1
amount = 1000
spsl = 7
sl = 0.01
se = calculate_tax(amount, sl, bool(hsbz))
data = {
"hjje": Decimal("0"),
"hjse": Decimal("0"),
"jshj": Decimal("0"),
"fyxm": [
{
"fphxz": 0,
"hsbz": hsbz,
"spmc": "*软件维护服务*接口服务费",
"spbm": "3040201030000000000",
"ggxh": "",
"dw": "次",
"dj": float(bcdiv(amount, spsl, 13)),
"spsl": spsl,
"je": float(amount),
"sl": sl,
"se": float(se),
}
],
}
for item in data["fyxm"]:
data["jshj"] = bcadd(data["jshj"], item["je"], 2)
data["hjse"] = bcadd(data["hjse"], item["se"], 2)
data["hjje"] = bcsub(data["jshj"], data["hjse"], 2)
data["hjje"] = float(data["hjje"])
data["hjse"] = float(data["hjse"])
data["jshj"] = float(data["jshj"])
print("含税计算示例4 有数量自动算价格 购买接口服务1000元7次:")
print(json.dumps(data, ensure_ascii=False, indent=4))
print("---------------------------------------------")
"""
/**
* 不含税计算示例
* 金额 = 单价 * 数量 je = dj * spsl
* 税额 = 金额 * 税率 se = je * sl
* hjse= se1 + se2 + ... + seN
* hjje= je1 + je2 + ... + jeN
* 价税合计 =合计金额+合计税额 jshj = hjje + hjse
*
*/
"""
"""
/**
*
* 不含税计算示例1 无价格 无数量
* @link `https://fa-piao.com/fapiao.html?action=data2&source=github`
*/
"""
hsbz = 0
amount = 200
sl = 0.01
se = calculate_tax(amount, sl, bool(hsbz))
data = {
"hjje": Decimal("0"),
"hjse": Decimal("0"),
"jshj": Decimal("0"),
"fyxm": [
{
"fphxz": 0,
"hsbz": hsbz,
"spmc": "*软件维护服务*接口服务费",
"spbm": "3040201030000000000",
"je": float(amount),
"sl": sl,
"se": float(se),
}
],
}
for item in data["fyxm"]:
data["hjje"] = bcadd(data["hjje"], item["je"], 2)
data["hjse"] = bcadd(data["hjse"], item["se"], 2)
data["jshj"] = bcadd(data["hjje"], data["hjse"], 2)
normalize_totals(data)
print("不含税计算示例1 无价格 无数量:")
print(json.dumps(data, ensure_ascii=False, indent=4))
print("---------------------------------------------")
"""
/**
*
* 不含税计算示例2 有价格 有数量
* @link `https://fa-piao.com/fapiao.html?action=data4&source=github`
*/
"""
# 一阶水费 1吨，单价2元/吨，税率0.03
# 二阶水费 1吨，单价3元/吨，税率0.01
hsbz = 0
spsl = 1
dj = 2
sl = 0.03
spsl2 = 1
dj2 = 3
sl2 = 0.01
je = bcmul(dj, spsl, 2)
se = calculate_tax(je, sl, bool(hsbz))
je2 = bcmul(dj2, spsl2, 2)
se2 = calculate_tax(je2, sl2, bool(hsbz))
data = {
"hjje": Decimal("0"),
"hjse": Decimal("0"),
"jshj": Decimal("0"),
"fyxm": [
{
"fphxz": 0,
"hsbz": hsbz,
"spmc": "*水冰雪*一阶水费",
"spbm": "1100301030000000000",
"ggxh": "",
"dw": "吨",
"dj": dj,
"spsl": spsl,
"je": float(je),
"sl": sl,
"se": float(se),
},
{
"fphxz": 0,
"hsbz": hsbz,
"spmc": "*水冰雪*而阶水费",
"spbm": "1100301030000000000",
"ggxh": "",
"dw": "吨",
"dj": dj2,
"spsl": spsl2,
"je": float(je2),
"sl": sl2,
"se": float(se2),
},
],
}
for item in data["fyxm"]:
data["hjje"] = bcadd(data["hjje"], item["je"], 2)
data["hjse"] = bcadd(data["hjse"], item["se"], 2)
data["jshj"] = bcadd(data["hjje"], data["hjse"], 2)
normalize_totals(data)
print("不含税计算示例2 有价格 有数量:")
print(json.dumps(data, ensure_ascii=False, indent=4))
print("---------------------------------------------")
"""
/**
* 不含税计算示例3 有价格自动算数量 购买猪肉1000元,16.8元/斤
* @link `https://fa-piao.com/fapiao.html?action=data6&source=github`
*
*/
"""
hsbz = 0
amount = 1000
dj = 16.8
sl = 0.01
se = calculate_tax(amount, sl, bool(hsbz))
data = {
"hjje": Decimal("0"),
"hjse": Decimal("0"),
"jshj": Decimal("0"),
"fyxm": [
{
"fphxz": 0,
"hsbz": hsbz,
"spmc": "*肉类*猪肉",
"spbm": "1030107010100000000",
"ggxh": "",
"dw": "斤",
"dj": dj,
"spsl": float(bcdiv(amount, dj, 13)),
"je": float(amount),
"sl": sl,
"se": float(se),
}
],
}
for item in data["fyxm"]:
data["hjje"] = bcadd(data["hjje"], item["je"], 2)
data["hjse"] = bcadd(data["hjse"], item["se"], 2)
data["jshj"] = bcadd(data["hjje"], data["hjse"], 2)
print("不含税计算示例3 有价格自动算数量 购买猪肉1000元,16.8元/斤:")
normalize_totals(data)
print(json.dumps(data, ensure_ascii=False, indent=4))
print("---------------------------------------------")
"""
/**
* 不含税计算示例4 有数量自动算价格 购买接口服务1000元7次
*
* @link `https://fa-piao.com/fapiao.html?action=data8&source=github`
*
*/
"""
hsbz = 0
amount = 1000
spsl = 7
sl = 0.01
se = calculate_tax(amount, sl, bool(hsbz))
data = {
"hjje": Decimal("0"),
"hjse": Decimal("0"),
"jshj": Decimal("0"),
"fyxm": [
{
"fphxz": 0,
"hsbz": hsbz,
"spmc": "*软件维护服务*接口服务费",
"spbm": "1030107010100000000",
"ggxh": "",
"dw": "次",
"dj": float(bcdiv(amount, spsl, 13)),
"spsl": spsl,
"je": float(amount),
"sl": sl,
"se": float(se),
}
],
}
for item in data["fyxm"]:
data["hjje"] = bcadd(data["hjje"], item["je"], 2)
data["hjse"] = bcadd(data["hjse"], item["se"], 2)
data["jshj"] = bcadd(data["hjje"], data["hjse"], 2)
print("不含税计算示例4 有数量自动算价格 购买接口服务1000元7次:")
normalize_totals(data)
print(json.dumps(data, ensure_ascii=False, indent=4))
print("---------------------------------------------")
"""
/**
* 免税计算示例
* 金额 = 单价 * 数量 je = dj * spsl
* 税额 = 0
* hjse = se1 + se2 + ... + seN
* jshj = je1 + je2 + ... + jeN
* 价税合计 =合计金额+合计税额 jshj = hjje + hjse
* @link `https://fa-piao.com/fapiao.html?action=data9&source=github`
*/
"""
hsbz = 0
dj = 32263.98
sl = 0
se = 0
data = {
"hjje": Decimal("0"),
"hjse": Decimal("0"),
"jshj": Decimal("0"),
"fyxm": [
{
"fphxz": 0,
"hsbz": hsbz,
"spmc": "*经纪代理服务*国际货物运输代理服务",
"spbm": "3040802010200000000",
"ggxh": "",
"dw": "次",
"spsl": 1,
"dj": float(dj),
"je": float(dj),
"sl": sl,
"se": se,
"yhzcbs": 1,
"lslbs": 1,
"zzstsgl": "免税",
}
],
}
for item in data["fyxm"]:
data["hjje"] = bcadd(data["hjje"], item["je"], 2)
data["hjse"] = bcadd(data["hjse"], item["se"], 2)
data["jshj"] = bcadd(data["hjje"], data["hjse"], 2)
normalize_totals(data)
print("免税计算示例:" + json.dumps(data, ensure_ascii=False, indent=4))