Python学习

在业余时间学习一下跨平台代码python。

下面是http://courses.ischool.berkeley.edu/i155/su13/schedule.htm下的例题代码。留作未来参考语法。

#hw1_1.py
x=input("Input the number of gallons of gasoline:")
print "Equivalent number of liters:",x*3.7854
print "Number of barrels of oil required to produce it:",x/19.5
print "Price in US dollars:$",x*3.56,

#hw1_2.py
import sys
name=raw_input("Enter your name:")
n=len(name)
print name[n-1].upper(),
#No space between the output letter
sys.stdout.softspace=0 
i=n-2
while i>=0:
    print name[i].lower(),
    sys.stdout.softspace=0
    i=i-1
    

#hw1_3.py
n=input("Enter a size:")
for j in range(0,n):
    for i in range(-n+1,n):
        if abs(i)<=j :
            print j-abs(i)+1,
        else: 
            print ' ',
    print ""

#hw1_4.py
n=input("Enter a size:")
for i in range(0,n):
    for j in range(0,n):
        if (i+j)%2==0:
            print "X",
        else:
            print " ",
    print ""