Using values from .txt file in python code

Question

I'm kinda lost on how to use constant values from an external .txt file in my python file

File.txt:

email=value1
phone=value2
name=value3

And I want to use these values on my python file.

I have tried to do this:

Data = open('file.txt', 'r')
data1= Data.read(email)
print(data1)

But it isn't working as expected, expected output is "Value1". But I get an error, and if I only do Data.read() I am getting:

email=value1
phone=value2
name=value3

How would I get each value separately to use them in my python code?

Almog Tzabari · Accepted Answer · 2021-08-21 03:56:48Z

1

I'm not sure exactly what are you looking for, but here's something that might help you:

# Open the file for read
Data = open('file.txt', 'r')

# Reading the data from file
data1 = {}
for line in Data.readlines():
    key, val = line.strip().split("=")  # strip() removes "\n" at the end of each line
    data1[key] = val                    # Placing key,val in dictionary


# Using the data
email = data1['email']

# Don't forget to close the file
Data.close()

answered Aug 21, 2021 at 3:56

Almog Tzabari

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1 Comment

imxitiz Over a year ago

It's better to use with. Why? Read Python: Open a file using “open with” statement & benefits explained with examples article from thispointer.com.

U13-Forward · Accepted Answer · 2021-08-21 03:53:09Z

0

Try this:

with open('file.txt', 'r') as file:
    data1 = dict(zip([i.strip().split('=') for i in file.readlines() if i]))
    print(data1['email'])

Output:

value1

edited Aug 21, 2021 at 3:53

answered Aug 21, 2021 at 3:43

U13-Forward

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4 Comments

Pepee Over a year ago

File "test.py", line 2, in <module>     data1 = dict(zip([i.strip().split('=') for i in file])) ValueError: dictionary update sequence element #0 has length 1; 2 is required

Im getting this

U13-Forward Over a year ago

@Pepee Can you show me your entire txt file?

Pepee Over a year ago

its basically as i put in the post, file is named "file.txt" and inside is email=value1 phone=value2 name=value3 in 3 different lines, Python program called Test.py has exactly the code you provided

Pepee Over a year ago

Still not working, But appreciate your help though. @ Almog answer works great

imxitiz · Accepted Answer · 2021-08-21 04:21:25Z

Extracted from @U12-Forward, working and tried to describe what we are doing:

with open('test.txt', 'r') as f:
    data = dict([i.split('=') for i in f.read().splitlines()])
    print(data["email"]) # value1
    print(data['phone']) # value2

What we are doing is, using f.read() reading file and splitting the f.read() into list from linebreak(\n) and looping through that list and again splitting those each lines with = and making list and then at last dict.

If it is harder for you to understand then you can split these lines like this, made easier to understand:

with open('test.txt', 'r') as f:
    read=f.read()
    data={}
    for i in read.splitlines():
        x=i.split("=")
        data.update(dict([x]))
    print(data["email"]) # value1
    print(data['phone']) # value2

Additionally:

You can use,change and do anything after this:

data["email"]="test@.."
print(data["email"]) # test@..

email=data["email"]
# Now you can use this email variable as your python variable.

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