Python-从多个文本文件读入字典

Question

I'm trying to combine two files into a dictionary. They are both text files.

The first file has the state initials and population. It looks like this:

AL 4447100
AK 626932
AZ 5130632
AR 2673400
CA 33871648
CO 4301261
...

The second file has the state initial and state name (this time per line, not side by side):

AL
Alabama
AK
Alaska
AZ
Arizona
AR
Arkansas
CA
California
CO
Colorado
...

I'm trying to create a dictionary that looks like this

{'Alabama': 4447100, 'Alaska': 626932, ...}

Now, I'm having trouble reading the first text file. How do I read just the numbers when the abbreviations are in the way?

The second text file is easier as I can read every other line.

Any suggestions?

Answer 1

You can use split depending on how you've read the data in.

For example:

>>> myStr = 'AL 4447100'
>>> myStr.split(' ')
>>> ['AL', '447100']

Answer 2

I won't give a full solution since this may be homework but your final one should have some code like this

d = {}

with open('file1.txt') as f:
    for line in f:
         state, pop = line.split()
         d[states[state]] = int(pop) # states is a dictionary with initials as 
                                     # the  keys and full names as values

Answer 3

Q) Now, I'm having trouble reading the first text file. How do I read just the numbers when the abbreviations are in the way?

A) You can use this with a string of each line to strip the first 3 characters from the string (acronym and a space):

number = lineString[3:]

Answer 4

Assuming you have files states.txt and pop.txt

with open("states.txt") as f1:
   x= f1.read().split()
   states = {state:abrv for state,abrv in zip(x[0::2],x[1::2])}

with open("pop.txt") as f2:
   y= f2.read().split()
   pop = {states[abrv]:val for abrv,val in zip(y[0::2],y[1::2])}