#!/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
