What i want to do is get specific input from the user and if the input does not match with specification, print an error message for few seconds and make it disappear and get the input again. Ex: below i want to get string from user and store it in a variable called 'name'. length of the string must be no more than 15. So if user supplied string of length 20, i want to print 'TOO LONG!(MAX:15)' but after that new prompt start right below that(because of the loop) . If user keep supplying too long strings, this going further and further. so i want to print 'TOO LONG!(MAX:15)' once and make it disappear after few seconds and get user back to the upper prompt . This is where i want to do it:
def get_contact():
try:
while True:
name = input('\033[1m\nNAME: \033[0m')
if name.isalpha():
if len(name) > 16:
print('\033[91m\033[1mTOO LONG!(MAX:15)\033[0m\033[0m')
continue
break
else:
print('\033[91m\033[1mALPHABETICAL CHARACTORS ONLY!\033[0m\
\033[0m')
while True:
number = input('\033[1m\nNUMBER: \033[0m')
if number.isnumeric():
if len(number) > 16:
print('\033[91m\033[1mTOO LONG!(MAX:15)\033[0m\033[0m')
continue
break
else:
print('\033[91m\033[1mNUMBERS ONLY!\033[0m\033[0m')
except EOFError:
print('\033[1m\n\nYOU CANCELED THE OPERATION!\033[0m')
time.sleep(1)
main_view()
except KeyboardInterrupt:
time.sleep(1)
os.system('clear')
exit(0)
return name, number
Full script:
import pickle, os, shutil, time
window_width, window_height = shutil.get_terminal_size()
def header():
os.system('clear')
line = '=' * window_width
welcome = 'PHONEBOOK'.center(window_width)
print('\033[1m{0}\n{1}\n{0}\033[0m\n'.format(line, welcome))
def main_view():
header()
data = None
try:
data = open('phonebook.data', 'rb')
phonebook = pickle.load(data)
except FileNotFoundError:
phonebook = {}
if phonebook:
print('\033[1m{0:20s}{1}\033[0m\n'.format('Name', 'Number'))
for name, number in sorted(phonebook.items()):
print('{0:20s}{1}'.format(name, number))
else:
print('\033[1mTHERE ARE NO ENTRIES.\033[0m\n')
if data:
data.close()
footer('main', phonebook)
def add_new(phonebook):
header()
name, number = get_contact()
phonebook.update({name : number})
update_file(phonebook)
footer('addnew')
def delete(phonebook):
header()
print('\033[1mENTER THE NAME OF THE CONTACT YOU WANT TO DELETE.\033[0m\n')
contact = get_input(': ')
found = isfound(phonebook, contact)
if found:
print('\033[1m\nDO YOU REALY WANT TO DELETE:\033[0m {0}({1})'\
.format(contact, phonebook[contact]))
print('\033[1m(YES FOR CONFIRM ANYTHING ELSE FOR CANCEL )\033[0m')
confirm = get_input(': ')
print(confirm)
if confirm == 'YES':
del phonebook[contact]
update_file(phonebook)
footer('delete')
else:
time.sleep(1)
main_view()
else:
print('\nNOT FOUND')
time.sleep(1)
delete(phonebook)
def modify(phonebook):
header()
print('\033[1mENTER THE NAME OF THE CONTACT YOU WANT TO MODIFY.\033[0m\n')
contact = get_input(': ')
found = isfound(phonebook, contact)
if found:
name, number = get_contact()
del phonebook[contact]
phonebook.update({name : number})
update_file(phonebook)
footer('modify')
else:
print('\nNOT FOUND')
time.sleep(1)
modify(phonebook)
def footer(view, phonebook=None):
if view == 'main':
text = '\033[1mADD NEW(a) MODIFY(m) DELETE(d) SEARCH(s)\
EXIT(CTRL-D)\033[0m'.center(window_width)
print('\n',text)
try:
action = input(': ')
except (EOFError, KeyboardInterrupt):
time.sleep(1)
os.system('clear')
exit(0)
if action == 'a':
add_new(phonebook)
elif action == 'm':
modify(phonebook)
elif action == 'd':
delete(phonebook)
else:
print('\nINVALID!')
time.sleep(1)
main_view()
elif view == 'addnew' or view == 'modify' or view == 'delete':
print('\033[1m\nSUCCESSFUL!\033[0m')
time.sleep(1)
main_view()
def get_contact():
try:
while True:
name = input('\033[1m\nNAME: \033[0m')
if name.isalpha():
if len(name) > 16:
print('\033[91m\033[1mTOO LONG!(MAX:15)\033[0m\033[0m')
continue
break
else:
print('\033[91m\033[1mALPHABETICAL CHARACTORS ONLY!\033[0m\
\033[0m')
while True:
number = input('\033[1m\nNUMBER: \033[0m')
if number.isnumeric():
if len(number) > 16:
print('\033[91m\033[1mTOO LONG!(MAX:15)\033[0m\033[0m')
continue
break
else:
print('\033[91m\033[1mNUMBERS ONLY!\033[0m\033[0m')
except EOFError:
print('\033[1m\n\nYOU CANCELED THE OPERATION!\033[0m')
time.sleep(1)
main_view()
except KeyboardInterrupt:
time.sleep(1)
os.system('clear')
exit(0)
return name, number
def get_input(string):
try:
var = input(string)
except EOFError:
print('\033[1m\n\nYOU CANCELED THE OPERATION!\033[0m')
time.sleep(1)
main_view()
except KeyboardInterrupt:
time.sleep(1)
os.system('clear')
exit(0)
return var
def isfound(phonebook, contact):
for name, number in phonebook.items():
if contact == name:
return True
return False
def update_file(phonebook):
data = open('phonebook.data', 'wb')
pickle.dump(phonebook, data)
data.close()
if __name__ == '__main__':
main_view()
