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user = input("enter a any key : >>>") #input from user

if (type(user)) == int: # chack type

print("it is a number")

else:

print("it is not a number")

# ///////output/////////

# enter a any key : >>>q

# it is not a number

user = input("enter a number:>>>>") #input from user

try:

val = int(user) # pass if number

except ValueError:

print("that is not a number") # if not message print

# ///////output/////////

# enter a number:>>>>q

# that is not a input

user = input("enter a number:>>") #input from user

if user.isdigit():

print("it is a digit")

else:

print("it is not a digit:")

# ///////output/////////

# enter a number:>>1

# it is a digit

# enter a number:>>a

# it is not a digit:

def user():

choice ="worng"

while choice.isdigit() == False:

choice = input("plese enter a number:")

return int(choice)

user()

# output 1

# plese enter a number:12

# output 2

# enter a number:>>q

# it is not a digit:

def user():

choice = "worng"

acceptable_rang = range(0,10)

with_rang = False

while choice.isdigit() == False or with_rang==False:

choice = input("enter a number (0,10):")

if choice.isdigit() == False:

print("sorry this is not a digit")

if choice.isdigit() == True:

if int(choice) in acceptable_rang:

with_rang = True

else:

with_rang = False

return int(choice)