打印Python中For Loop的所有字典结果

Question

I am trying to print the results from all 3 names that are input, in a dictionary format. Current code below only prints out the last name. The 2 lines commented out (#) are what I was trying to change around to get it to work, clearly not doing it correctly.

def name():
    count = 0
    while (count  < 5):
        d = {}
        qs = dict(Fname='first name', Lname='last name')
        for k,v in qs.items():
            d[k] = input('Please enter your {}: '.format(v))
                #d['first name'].append(v)
                #d['last name'].append(v)
                count += 1
    print(d)

name()

Answer 1

A few things that I'd change:

• append each record ( dictionary ) to a list of entries.
• (optional) Use a for-loop rather than a while as less lines of code.
• return the entries list, rather than print it as it is a function so I like to have outputs.

So here's the corrected code:

def name():
    entries = []
    for count in range(5):
        d = {}
        qs = dict(Fname='first name', Lname='last name')
        for k, v in qs.items():
            d[k] = input('Please enter your {}: '.format(v))
        entries.append(d)
    return entries

print(name())

---

For testing purpose, I modified it to just except 2 entries, but we can still see that it works:

Please enter your last name: fish
Please enter your first name: bowl
Please enter your last name: cat
Please enter your first name: mat
[{'Lname': 'fish', 'Fname': 'bowl'}, {'Lname': 'cat', 'Fname': 'mat'}]

Answer 2

Hope! you got it right from Martijin Comments, For reference to other adding this code:

def name():
    count = 0
    listOfDict = [] #creating empty list
    for count in range(3):
        dict = {}
        qs = dict(Fname = 'first name', Lname = 'last name' )
        for k,v in qs.items():
            d[k] = input('please enter your {}: '.format(v))
        listOfDict.append(d) # adding each item to the list.
        count += 1
    print listOfDict

name()

Answer 3

This should work:

def name():
    count = 0
    while (count  < 5):
        d = {}
        qs = dict(Fname='first name', Lname='last name')
        for k,v in qs.items():
            a = input('Please enter your {}: '.format(v))
            d[v] = a
        count += 1
        print(d['first name'],d['last name'])

name()

Answer 4

You can use defaultdict to automatically create lists to store each entered value. The main idea is that you want to append each entered value to a collection of some type (eg list).

from collections import defaultdict

number_of_entries = 3
dd = defaultdict(list)
for _ in range(number_of_entries):
    for key in ('first name', 'last_name'):
        dd[key].append(input('please enter you {}: '.format(key)))

>>> print(dict(dd))
{'first name': ['Adam', 'Milton', 'Irving'],
 'last_name': ['Smith', 'Friedman', 'Fisher']}