[英]How to format a user input into a different out put?Python
如何从一个输入(10个数字): XXXXXXXXXX
转换成: X.XX.XX.XX.XXXX
到目前为止,这是我的代码:
creat_number_account = input("Account Number:")
def c_n_account(creat_number_account):
if len(creat_number_account) <10:
print("This account require 10 numbers")
elif n_list[10] == "0":
print("The last number can't be: '0'")
else:
list =[]
for n in creat_number_account:
list+= n
print(f'{list [0]}.{list[1][2]}.'
f'{list[3][4]}.{list[5][6]}.{list[7][8][9][-1]}')
print(c_n_account(creat_number_account))
OUTPUT:
print(f'{list [0]}.{list[1][2]}.'
IndexError: string index out of range
如果要从输入字符串中打印多于 1 个字符,则可以使用creat_number_account[1:3]
。 这样的事情应该适合你:
creat_number_account = input("Account Number:")
def c_n_account(creat_number_account):
if len(creat_number_account) <10:
print("This account require 10 numbers")
elif creat_number_account[10] == "0":
print("The last number can't be: '0'")
else:
print(f'{creat_number_account[0]}.{creat_number_account[1:3]}.{creat_number_account[3:5]}.{creat_number_account[5:7]}.{creat_number_account[7:]}')
如果输入大于 10 个字符,您应该添加检查。
添加@Sefan 的回答,不断提示用户,直到收到正确的格式:
n = input("Account Number:")
def c_n_account(n):
while True:
if len(n) < 10 or len(n) > 10:
print("This account requires 10 numbers only")
n = input("Account Number:")
continue
elif n[9] == "0":
print("The last number can't be: '0'")
n = input("Account Number:")
continue
else:
act = f"{n[0]}.{n[1:3]}.{n[3:5]}.{n[5:7]}.{n[7:]}{n[-1]}"
return act
break
print(c_n_account(n))
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