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161 lines (125 loc) · 3.7 KB
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if __name__ == '__main__':
print("--- think.py ---")
# 代码1
def print_lyrics():
for _ in range(5):
print("你好，我打印出来函数lyrics的内容")
print("Python非常有意思")
def repeat_lyrics():
print_lyrics()
repeat_lyrics()
# 代码2
# def sort_by(x, y):
# if x>y:
# return True
# else:
# return False
# print('对比结果: {0}'.format(sort_by(20,10)))
# 代码3
# samples = 'samplecode'
# print("打印字符串切片:{0}".format(samples[:]))
# 代码4
# print的新用法，括号中说明多个变量用逗号分开
# families = ["chenhui","chenyanqiu","xuzhongxia"]
# for fam in families:
# print fam
# print('chenhui in Famliy: {0}'.format('Chenhui' in families))
# for i in range(len(families)):
# print 'Member_{0}: {1} '.format(i,families[i])
# def nested_sum(raw_list):
# total = 0
# for rl in raw_list:
# total += sum(rl)
# return total
# test_sum_list = [[1,2],[3],[4,5,6]]
# print("计算总和: {0}".format(nested_sum(test_sum_list)))
# 代码5
# random = 'iamachinese'
# def histogram(s):
# d = dict()
# for c in s:
# if c not in d:
# d[c] = 1
# else:
# d[c] += 1
# return d
# print '打印统计数据: {0}'.format(histogram(random))
# def reverse_lookup(d,v):
# print '告诉我字典的长度: {0}'.format(len(d))
# results = []
# for k in d:
# if(d[k] == v):
# results.append(k)
# return results
# random_dict = {"a":"spring","b":"summer","c":"autumn","d":"winter"}
# print reverse_lookup(random_dict,"spring")
# 代码6
# 元组（是tuple不是元祖蛋糕谢谢。）
# def muti_divmod(a,b):
# return divmod(a,b)
# print '元组返回值: {0}'.format(muti_divmod(7,3))
# def muti_args(*agrs):
# print '入参: {0}'.format(agrs)
# muti_args('a','b')
# account, domain = 'chenhui2547@qianmi.com'.split("@")
# print '元组赋值，用户名:{0}, 域名:{1}'.format(account,domain)
# answers = ['a','b','c','d']
# for i,ele in enumerate(answers):
# print '{0}:{1}'.format(i,ele)
# 代码7
# import os
# cwd = os.getcwd()
# print cwd
# import os
# def walk_cwd(dirname):
# for name in os.listdir(dirname):
# path = os.path.join(dirname,name)
# if os.path.isfile(path):
# print path
# else:
# walk_cwd(path)
# walk_cwd(os.getcwd())
# try:
# fin = open('random_file.txt')
# except:
# print '没有找到文件错误'
# import os
# import hashlib
# file_hash = hashlib.md5()
# path = os.getcwd() + '/README.md'
# print 'Print: {0}'.format(path)
# file_hash.update(open(path).read())
# print file_hash.hexdigest()
# 代码8
# from student import Student
# s = Student('chenhui',100)
# s.print_score()
# 代码9
# for a in [3,4.4,"life"]:
# print '打印序列元素: {0}'.format(a)
# 代码10
# 总价100万的房子，全额贷款买房，前四年利率有折扣，分别是1%、2%、3%、3.5%
# 其余年份里房贷利率都是5%，逐年还款，每年最多偿还3万元。
# 问: 完全还清房贷需要多少年？
# year = 0
# total_amount = 500000.0
# interest_rates = (0.01,0.02,0.03,0.035)
# repay = 30000.0
# while total_amount > 0 :
# year = year + 1
# # print '第{0}年偿还贷款...'.format(year)
# if year <= 4 :
# interest = interest_rates[year-1]
# else:
# interest = 0.05
# total_amount = total_amount * (interest + 1) - repay
# print '剩余金额%.2f' % total_amount
# print '恭喜您，通过{0}年终于还清了房贷'.format(year)
# 代码11
# 函数定义: 形参
# 函数调用: 实参
# def print_hello():
# """ print hello world """
# print 'Hello World'
# help(print_hello)
# print_hello()