作业: 输入年龄并且将年龄值转换成整数，如果输入错误程序不崩溃，
让其重新输入，直到输入无误为止...
def get_age():
while 1:
try:
age = int(input('input your age with a integer:'))
except:
print('input error, please retype...\n')
continue
return age
print(get_age())
print('======================第二种==========================')
def get_age2():
age = 0
targ = 0
while 1:
if targ == 0:
try:
age = int(input('input your age with a integer:'))
targ = 1
except:
targ = 0
print('input error, please retype...')
else:
break
return age
print(get_age2())
print('========================pillowKu=====================================)
from PIL import Image
codeLib = '''@B%8&WM#*oahkbdpqwmZO0QLCJUYXzcvunxrjft/\|()1{}[]?-_+~<>i!lI;:,"^`'. '''#生成字符画所需的字符集
count = len(codeLib)
# print(count)
def transform1(image_file):
image_file = image_file.convert("L") # 转换为黑白图片，参数"L"表示黑白模式
codePic = ''
for h in range(0, image_file.size[1]): # size属性表示图片的分辨率，'0'为横向大小，'1'为纵向
for w in range(0, image_file.size[0]): #'0'为横向大小，
gray = image_file.getpixel((w, h)) # 返回指定位置的像素，
# 如果所打开的图像是多层次的图片，那这个方法就返回一个元组
codePic = codePic + codeLib[int(((count - 1) * gray) / 256)] # 建立灰度与字符集的映射
codePic = codePic + '\r\n'
return codePic
def transform2(image_file):
codePic = ''
for h in range(0, image_file.size[1]):
for w in range(0, image_file.size[0]):
g, r, b = image_file.getpixel((w, h))
gray = int(r * 0.299 + g * 0.587 + b * 0.114)
codePic = codePic + codeLib[int(((count - 1) * gray) / 256)]
codePic = codePic + '\r\n'
return codePic
fp = open(r'D:\07.jpg','rb')
image_file = Image.open(fp)
image_file=image_file.resize((int(image_file.size[0]*0.1), int(image_file.size[1]*0.1)))#调整图片大小
print (u'Info:',image_file.size[0],' ',image_file.size[1],' ',count)
tmp = open('tmp2.txt','w')
tmp.write(transform1(image_file))
tmp.close()
