从文本文件创建编号列表

Question

I'm looking to convert a list of names in a text file into a dictionary, with numbers in front of the names as a list.

text file:

Adam A
Bob B
Charles C

The text file just has a name every line

Desired results:

{1: 'Adam A', 2: 'Bob B', 3: 'Charles C'}

So far this is my current code

numbered_dict = {}
namelist = open("data.txt")
for line in namelist:
    a=0
    a+=1
    numbered_dict[a]=line

and the output is:

{1: 'Charles C'}

For some reason its only taking the very last name in the list

Any help would be much appreciated, thanks!

Answer 1

for line in namelist:
    a=0
    a+=1
    numbered_dict[a]=line

Each time through the loop you set a to 0 and then increase it to 1.

You have to initialize the variable outside the loop:

a=0
for line in namelist:
    a+=1
    numbered_dict[a]=line

---

As a better tool, however, you can use the dict constructor and the enumerate function:

numbered_dict = dict(enumerate(open("data.txt")))

Answer 2

Try this:

import csv
# Create a dictionary that will contain the file data
dic = {}
# Open the file and read it
with open('data.txt', 'r') as fd:
    # contain file in a list
    reader = csv.reader(fd)
    # Create a counter that will be the key of a line in the file
    count = 1
    for row in reader:
        dic[count] = row[0]
        count += 1
print(dic)

Answer 3

You should initialize a=0 just above the loop, not within. Your code should be

numbered_dict = {}
namelist = open("data.txt")
a=0
for line in namelist:
    a+=1
    numbered_dict[a]=line

Answer 4

import ast

with open('data.txt') as file:
    data=file.read()

numbered_dict=ast.literal_eval(data)
print(numbered_dict)

output:

{1: 'Adam A', 2: 'Bob B', 3: 'Charles C'}

You can read several other methods here:

https://www.geeksforgeeks.org/how-to-read-dictionary-from-file-in-python/