from functools import reduce
def normalize(name): return name.capitalize() L1 = ['adam','LISA','barT'] L2 = list(map(normalize,L1)) print(L2)
def prod(L): def product(a,b): return ab return reduce(product,L) print('3579 = ',prod([2*n+1 for n in range(1,5)]))
def str2float(s): digits = {'0': 0, '1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9, '.': '.'} def char2num(c): return digits[c] def s2int(a,b): return a*10 + b ls = list(map(char2num, s)) #转化成list p = ls.index('.') #'.'的索引 ls = ls[:p] + ls[p+1:] #删除掉'.' return reduce(s2int,ls) / pow(10, len(ls) - p) print('str2float(\'123.456\') =', str2float('123.456')) if abs(str2float('123.456') - 123.456) < 0.00001: print('测试成功!') else: print('测试失败!')
因为#是markdown的特殊字符呀，可以用\#转义或者用```python 这里是代码 ```
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from functools import reduce
def normalize(name): return name.capitalize() L1 = ['adam','LISA','barT'] L2 = list(map(normalize,L1)) print(L2)
def prod(L): def product(a,b): return ab return reduce(product,L) print('3579 = ',prod([2*n+1 for n in range(1,5)]))
def str2float(s): digits = {'0': 0, '1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9, '.': '.'} def char2num(c): return digits[c]
def s2int(a,b): return a*10 + b ls = list(map(char2num, s)) #转化成list p = ls.index('.') #'.'的索引 ls = ls[:p] + ls[p+1:] #删除掉'.' return reduce(s2int,ls) / pow(10, len(ls) - p) print('str2float(\'123.456\') =', str2float('123.456')) if abs(str2float('123.456') - 123.456) < 0.00001: print('测试成功!') else: print('测试失败!')