Python: How to Split Each Line of Code in a File and Add to a Dictionary

Question

I have a text file that contains State names and their corresponding Capital. I am trying to read the lines one at a time and separate the State from the Capital. Then I want to add the States and Capitals as key and value pairs in my dictionary respectively. I am still very new to programming so any help would be appreciated. Currently, I am struggling to separate the text file one line at a time. This is what I have so far.

def main():

    dict = {}
    file = open(input("Please enter the name of the file: "))
    lines = file.readline()

    while lines:
        text = lines.split(",")
        lines = file.readline()

Example of Text File:

Arizona,Phoenix

Arkansas,Little Rock

California,Sacramento

Colorado,Denver

Connecticut,Hartford

Florida,Tallahassee

Georgia,Atlanta

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You need to work through a tutorial on Python files; any of these will teach you how to iterate through the lines of a text file. — Prune, May 03 '21 at 23:05
Does this answer your question? [How to read a file line-by-line into a list?](https://stackoverflow.com/questions/3277503/how-to-read-a-file-line-by-line-into-a-list) — Woodford, May 03 '21 at 23:22

score 1 · Answer 1 · answered May 04 '21 at 19:30

Use the following example how to read the file and parse States and Capitals:

output = {}
with open("your_file.txt", "r") as f_in:
    for line in f_in:
        line = line.strip()
        if line == "":  # skip empty lines
            continue
        state, capital = line.split(",")
        output[state] = capital  # add state and capital to output dictionary

print(output)

Prints:

{'Arizona': 'Phoenix', 
 'Arkansas': 'Little Rock', 
 'California': 'Sacramento', 
 'Colorado': 'Denver', 
 'Connecticut': 'Hartford', 
 'Florida': 'Tallahassee', 
 'Georgia': 'Atlanta'}

Python: How to Split Each Line of Code in a File and Add to a Dictionary

1 Answers1