Input
name = input('enter your name \n')
name.split()
c = 0
s = '"[@_!#$%^&*()<>?/\|}{~:]"'
for i in range(len(name)):
if name[i] in s or name[i].isdigit():
c += 1
if c == 0:
print("your name is " + name)
else:
try:
raise Exception('Invalid character')
except Exception as e:
print('invalid character in your name', e
Output
for valid character
enter your name
aman
your name is aman
for invalid character
enter your name
*aman
invalid character in your name Invalid character