搞笑的程序猿：看看你是哪种Python程序员

来源：优纳美食网

不久前，在互联网上出现了一篇有趣的文章，讲的是对于同一个问题，不同层次的Python程序员编出的Python代码，显示出了不同的风格，代码都很简单，有趣。下面让我们一起来看看一个Python程序猿进阶的全过程吧。(偷笑)

编程新手

def factorial(x): 
 if x == 0: 
 return 1 
 else: 
 return x * factorial(x - 1) //不简单啊，迭代，新手哦。 
print factorial(6)

一年编程经验(学Pascal的)

def factorial(x): 
 result = 1 
 i = 2 
 while i <= x: 
 resultresult = result * i 
 ii = i + 1 
 return result 
print factorial(6)

一年编程经验(学C的)

def fact(x): #{ 
 result = i = 1; 
 while (i <= x): #{ 
 result *= i; 
 i += 1; 
 #} 
 return result; 
#} 
print(fact(6))

一年编程经验(读过SICP)

@tailcall 
def fact(x, acc=1): 
 if (x > 1): 
 return (fact((x - 1), (acc * x))) 
 else: 
 return acc 
print(fact(6))

一年编程经验(Python)

def Factorial(x): 
 res = 1 
 for i in xrange(2, x + 1): 
 res *= i 
 return res 
 print Factorial(6)

懒惰的Python程序员

def fact(x): 
 return x > 1 and x * fact(x - 1) or 1 
print fact(6)

更懒的Python程序员

f = lambda x: x and x * f(x - 1) or 1 //匿名函数，厉害。程序猿真是懒人做的！ 
print f(6)

Python专家

fact = lambda x: reduce(int.__mul__, xrange(2, x + 1), 1) 
print fact(6) //专家厉害啊。

Python黑客

import sys 
@tailcall 
def fact(x, acc=1): 
 if x: return fact(x.__sub__(1), acc.__mul__(x)) 
 return acc 
sys.stdout.write(str(fact(6)) + '
') //一般人压根看不懂。

专家级程序员

from c_math import fact 
print fact(6)

大英帝国程序员

from c_maths import fact 
print fact(6) 
Web设计人员
def factorial(x): 
 #------------------------------------------------- 
 #--- Code snippet from The Math Vault --- 
 #--- Calculate factorial (C) Arthur Smith 1999 --- 
 #------------------------------------------------- 
 result = str(1) 
 i = 1 #Thanks Adam 
 while i <= x: 
 #result = result * i #It's faster to use *= 
 #result = str(result * result + i) 
 #result = int(result *= i) #?????? 
 result = str(int(result) * i) 
 #result = int(str(result) * i) 
 i = i + 1 
 return result 
print factorial(6)

Unix 程序员

import os 
def fact(x): 
 os.system('factorial ' + str(x)) 
fact(6)

Windows 程序员

NULL = None 
def CalculateAndPrintFactorialEx(dwNumber, 
 hOutputDevice, 
 lpLparam, 
 lpWparam, 
 lpsscSecurity, 
 *dwReserved): 
 if lpsscSecurity != NULL: 
 return NULL #Not implemented 
 dwResult = dwCounter = 1 
 while dwCounter <= dwNumber: 
 dwResult *= dwCounter 
 dwCounter += 1 
 hOutputDevice.write(str(dwResult)) 
 hOutputDevice.write('
') 
 return 1 
import sys 
CalculateAndPrintFactorialEx(6, sys.stdout, NULL, NULL, NULL, 
 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL) //可能自己都晕菜了...

企业级程序员

def new(cls, *args, **kwargs): 
 return cls(*args, **kwargs) 
 
class Number(object): 
 pass 
 
class IntegralNumber(int, Number): 
 def toInt(self): 
 return new (int, self) 
 
class InternalBase(object): 
 def __init__(self, base): 
 self.base = base.toInt() 
 
 def getBase(self): 
 return new (IntegralNumber, self.base) 
 
class MathematicsSystem(object): 
 def __init__(self, ibase): 
 Abstract 
 
 @classmethod 
 def getInstance(cls, ibase): 
 try: 
 cls.__instance 
 except AttributeError: 
 cls.__instance = new (cls, ibase) 
 return cls.__instance 
 
class StandardMathematicsSystem(MathematicsSystem): 
 def __init__(self, ibase): 
 if ibase.getBase() != new (IntegralNumber, 2): 
 raise NotImplementedError 
 self.base = ibase.getBase() 
 
 def calculateFactorial(self, target): 
 result = new (IntegralNumber, 1) 
 i = new (IntegralNumber, 2) 
 while i <= target: 
 result = result * i 
 i = i + new (IntegralNumber, 1) 
 return result 
 
print StandardMathematicsSystem.getInstance(new (InternalBase, 
new (IntegralNumber, 2))).calculateFactorial(new (IntegralNumber, 6)) //面向对象，但就此题来说，又长又臭。

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搞笑的程序猿：看看你是哪种Python程序员