CODEWITHSUNDEEP
python
Narasimha
Narasimha

Reputation: 21

unable to read the data from file in python

I am unable to read the data from file in python . Below is the sample code and Error which I am getting . 

abc.txt has the value 2015-05-07

f = open("/opt/test/abc.txt","r")
f.read()
last_Exe_date = f.read()
f.close()

while reading the file(anc.txt) i am getting the error : TypeError: argument 1 must be string or read-only character buffer, not file . i am not able to read the value into last_Exe_date from file(abc.txt) . could you please correct me if I am wrong with the code.

Upvotes: 1

Views: 641

Answers (2)

Martin Evans
Martin Evans

Reputation: 46759

The following should work fine:

f = open("/opt/test/abc.txt","r")
last_Exe_date = f.read()
f.close()

As was said, you had f.read() twice, so when you tried to store the contents into last_Exe_date, it would be empty.

You could also consider using the following method:

with open("/opt/test/abc.txt","r") as f:
    last_Exe_date = f.read()

This will ensure that the file is automatically closed afterwards.

Upvotes: 0

301_Moved_Permanently
301_Moved_Permanently

Reputation: 4186

When you read a file once, the cursor is at the end of the file and you won't get anything more by re-reading it. Read through the docs to understand it more. And use readline to read a file line by line.

Oh, and remove the semicolon at the end of your read calls...

Upvotes: 4

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