In Python, by typing digit_mapping.get("1")
, I can access value of one in this dictionary. I am wondering why it still can access the dictionary without ""
around the character inside the get method in this code.
like output += digit_mapping.get("character", "!") + " "
phone = input("Phone: ")
digit_mapping = {
"1": "One",
"2": "Two",
"3": "Three",
"4": "Four"
}
output = ""
for character in phone:
output += digit_mapping.get(character, "!") + " "
print(output)
As mentioned in the comments, character
is a variable. It holds a value; in your case, a string
. "character"
, on the other hand, is a string
. In your example, "character"
would return nothing, since the dictionary doesn't carry a key by that name. On the other hand, the value that the variable character
contains ( "1", "2", "3" and "4"
; a value for each iteration within the for
-loop) is a valid key
in the dictionary and would yield the desired value
from the dictionary.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.