2009年10月22日星期四

[2009-10-22-4] Python - 6/49大樂透

#!/usr/bin/env python
# -*- coding: UTF-8 -*-


#file name: ray.py
#2009-10-16, RayZ, demo cases/notes using python
#第二行是用來寫中文註解

#this file can be execution if the first row has #!/usr/bin/env python. usage is 
#chomd 770 ray.py
#./ray.py
# or using $ python ray.py in command line (it is txt file)

# look for Python's built in functions using Python command line
# >>> import __builtin__
# >>> dir(__builtin__)

def ask_ok(prompt, retries=4, complaint='Yes or no, please!'):
    while 1:
        ok = raw_input(prompt) 
        if ok in ('y', 'ye', 'yes'): return 1
        if ok in ('n', 'no', 'nop', 'nope'): return 0
        retries = retries - 1
        if retries < 0: raise IOError, 'refusenik user'
        print complaint    
    
def f91(a, l = []):
    l.append(a)
    return l
def f92(a, l = None):
    if l is None:
        l = []
    l.append(a)
    return l


while 1: 
    Title = "\n\
    Example 10: 避開共用值\n\
    Example 9: 6/49大樂透\n\
    Example 8: function repeat\n\
    Example 7: 質數for loop's else\n\
    Example 6: range\n\
    Example 5: 費氏數列\n\
    Example 4: 字串\n\
    Example 3: if\n\
    Example 2: if\n\
    Example 1: Hello\n\
    0:Quit\n\
    Please enter a number: "
    setNo = int(raw_input(Title))
    print "\n"

    if setNo == 10:
        print "function point", f91, f92
        print "第一次呼叫 f91(5)=", f91(5), ",f92(1)=", f92(1)
        print "第二次呼叫 f91(6)=", f91(6), ",f92(2)=", f92(2)
        print "第三次呼叫 f91(7)=", f91(7), ",f92(3)=", f92(3)
        
    elif setNo == 9:
        import random
        l = []
        for n in range(-1,5):  # 5 - (-1) 個
            l.append(random.randint(1,49))
        print l
    
    elif setNo == 8:
        ask_ok('Do you really want to quit?')
        ask_ok('Ok, to overwrite the file?', 10)
       
    elif setNo == 7:
        for n in range(2, 10):
            for x in range(2, n):
                if n % x == 0:
        print n, 'equals', x, '*', n/x
        break
     else: # for's else, # special usage
         print n, 'is a prime number'

    elif setNo == 6:
        a = ['Mary', 'had', 'a', 'little', 'lamb']
        for i in range(0, len(a), 2):
            print i, a[i]
    elif setNo == 5:
        a, b = 0, 1
        while b < 10:
            print b, 
            a, b = b, a + b
        print "\n"
        
    elif setNo == 4:
        x = y = z = 0 
        print "x =";x
        print "x =",x
        word='Hel'+'p '
        print word*5

    elif setNo == 3:
        x = int(raw_input("Please enter a number: "))
        if x<0:
            x = 0
            print "Negative changed to zero"
        elif x==0:
            print "Zero"
        elif x==1:
            print "Single"
        else:
            print "More"

    elif setNo == 2:
        a = 5
        b = 5.5
        if b > a:
            print "b is more than a !\n"
        else:
            print "b is less than a !\n"

    elif setNo == 1:
        print "This is Python -- Hello.world!"
        print ("Hello.world!\n")

    elif setNo == 0:
        print "Quit Example"
        break

    else:
        print "Please enter a number(0~8)\n"

[參考]
[1] Python 教學文件
[2] 隨機數與隨機字符串
[3] PythonDOC

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