Trouble when entering the number

[Kebap]

You are right. With terminal it is different.  I repeat the two correct lines that work with the terminal but not with myCharm:            

text=input("enter your text ")      
print("you entered: ", text)

            Here is what the interpreter of myCarm says:              

Error:
text=input("enter your text: ")
  File "<string>", line 1, in <module>
NameError: name 'cvfret' is not defined

            Do you think I must delete all myCharm and then reinstall the same ???

It seems like you are using a version of python 2.x so please change input() into raw_input().