交一交作业
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第三题： from functools import reduce
DIGITS = {'0': 0, '1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9}
def char2num(s): return DIGITS[s]
def str2float(s): return reduce(lambda x, y: x10 + y, map(char2num, s.split('.')[0])) + reduce(lambda x, y: x0.1 + y, map(char2num, s.split('.')[1][::-1]))*0.1
s='123.456' print s
- 1
test_number
第一题： def normalize(name): name=name[0].upper()+name[1:].lower() return name
r=list(map(normalize,['adam', 'LISA', 'barT']))
print r
第二题: from functools import reduce def prod(L): return reduce(lambda x, y: x*y, L) print(prod([3, 5, 7, 9]))
第三天： from functools import reduce
DIGITS = {'0': 0, '1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9}
def char2num(s): return DIGITS[s]
def str2float(s): return reduce(lambda x, y: x 10 + y, map(char2num, s.split('.')[0])) + reduce(lambda x, y: x 0.1 + y, map(char2num, s.split('.')[1][::-1]))*0.1
s='123.456' print s