python王者归来第五章部分习题答案

#1.正负转换
'''
a=input("请输入一个数")
a=list(a)

if a[0]=='+':
        a[0]='-'
        b = [str(j) for j in a]
        c = ''.join(b)
        print(c)
elif a[0]=='-':
        a[0]='+'
        b = [str(j) for j in a]
        c = ''.join(b)
        print(c)
else:
        print("输入错误")
'''

#2.字符转换

‘’’

a=input("请输入字符")
b=a.upper()
c=a.lower()
c1=list(c)
b1=list(b)
for itemb in c1:
    mac= itemb
    for itema in b1:
        if mac == itema[0]:
            itema[1] += cnt
            break
    else:
        b1.append(itemb)
print(b1)

‘’’

标签：王者,python,list,itemb,b1,print,input,习题,itema
来源： https://blog.csdn.net/m0_57057282/article/details/121342598