A string is a sequential object that has zero, one or many characters. This lab asks you to ask the user for a string and then count the number of digits in the string. NOTE: You must do this with a WHILE loop, not a FOR. How can you tell if a character is a digit? If you have a string variable named str, you. can make a Boolean expression that will be True by doing this: str.isdigit() So if I code: str="spam" then str.isdigit) will be False But if I code: str =. "1984" then str.isdigit() will evaluate to True. The strings will have digits and non-digits mixed. You must look at each character of the string by itself. You do this by indexing the string. If i is an index variable, then str[i] will give you the character at the i-th position in the string (remembering that it is indexed from zero).
A string is a sequential object that has zero, one or many characters. This lab asks you to ask the user for a string and then count the number of digits in the string. NOTE: You must do this with a WHILE loop, not a FOR. How can you tell if a character is a digit? If you have a string variable named str, you. can make a Boolean expression that will be True by doing this: str.isdigit() So if I code: str="spam" then str.isdigit) will be False But if I code: str =. "1984" then str.isdigit() will evaluate to True. The strings will have digits and non-digits mixed. You must look at each character of the string by itself. You do this by indexing the string. If i is an index variable, then str[i] will give you the character at the i-th position in the string (remembering that it is indexed from zero).
Chapter5: Looping
Section: Chapter Questions
Problem 13E
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Using Python
![A string is a sequential object that has zero, one or many characters. This lab asks you to ask the user for a string and then count the
number of digits in the string.
NOTE: You must do this with a WHILE loop, not a FOR.
How can you tell if a character is a digit? If you have a string variable named str, you. can make a Boolean expression that will be True by
doing this: str.isdigit() So if I code: str="spam" then str.isdigit() will be False But if I code: str =. "1984" then str.isdigit( will evaluate to True.
The strings will have digits and non-digits mixed. You must look at each character of the string by itself. You do this by indexing the string. If
i is an index variable, then str[i] will give you the character at the i-th position in the string (remembering that it is indexed from zero).
320626 2266252
37ay7](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcdf1eab3-4959-4508-a5d5-3ec1092711da%2F8ce94fd2-88e3-484d-a4be-f694718e46f1%2Fkmo43q_processed.png&w=3840&q=75)
Transcribed Image Text:A string is a sequential object that has zero, one or many characters. This lab asks you to ask the user for a string and then count the
number of digits in the string.
NOTE: You must do this with a WHILE loop, not a FOR.
How can you tell if a character is a digit? If you have a string variable named str, you. can make a Boolean expression that will be True by
doing this: str.isdigit() So if I code: str="spam" then str.isdigit() will be False But if I code: str =. "1984" then str.isdigit( will evaluate to True.
The strings will have digits and non-digits mixed. You must look at each character of the string by itself. You do this by indexing the string. If
i is an index variable, then str[i] will give you the character at the i-th position in the string (remembering that it is indexed from zero).
320626 2266252
37ay7
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