交作业
Topic source
#3 def char2num(s): return {'0':0,'1':1,'2':2,'3':3,'4':4,'5':5,'6':6,'7': 7,'8':8,'9':9}[s]
def str2float(s): n=s.index('.') return reduce(lambda x,y:x10+y, map(char2num,s[:n]))+0.1reduce(lambda x,y:x*0.1+y, map(char2num,s[n+1:][::-1]))
- 1
梘香
#1. def normalize(name): a=name[0].upper()+name[1:].lower()
print(normalize(input('请输入英文名:')))
#2. def prod(L): return reduce(lambda x,y:x*y,L)
print(prod([1,2,3,4]))
#3. def str2float(s): n=s.index('.') return float(s[:n])+float('0.'+s[n+1:])
print(str2float(input("请输入小数：")))