i have searched through the forum and can't understand if i can use the following construct to insert new entries into my Python Dictionary...without turning it into a list.
for x in range(3):
pupils_dictionary = {}
new_key =input('Enter new key: ')
new_age = input('Enter new age: ')
pupils_dictionary[new_key] = new_age
print(pupils_dictionary)
The output is as follows:
Enter new key: Tim
Enter new age: 45
Enter new key: Sue
Enter new age: 16
Enter new key: Mary
Enter new age: 15
{'Mary': '15'}
Why does ONLY Mary:15 go in, and none of the others?
thanks/
解決方案
Its because you do
pupils_dictionary = {}
Inside your loop, on every loop, its value get reset to {}
suggestion :
use raw_input instead of input
so this code should work :
pupils_dictionary = {}
for x in range(3):
new_key = raw_input('Enter new key: ')
new_age = raw_input('Enter new age: ')
pupils_dictionary[new_key] = new_age
print(pupils_dictionary)