Extracting a user input from a text file - file

Question

I have a text file that is called paintingJobs.txt, each line is structured in this way:
Estimate Number, Estimate Date, Customer ID, Final Total, Status (E for Estimate, A for Accepted job or N for Not accepted), and Amount Paid.
Here is an extract:
E5341, 21/09/2015, C102, 440, E, 0
E5342, 21/09/2015, C103, 290, A, 290
E5343, 21/09/2015, C104, 730, N, 0
I would like the user to input any Estimate number and for that line to be outputted. How can I achieve this?
Here is what I came up with but it doesn't work as required:
def option_A():
es_num = str.upper (input ("Please enter the estimate number: "))
with open('paintingJobs.txt', 'r') as file:
line = file.readline ()
print (line, end = '')
if es_num in file:
#print whole line
else:
print("Not found")
I would like to display the information in this format
Estimate Number: the estimate number
Customer ID: the customer ID
Estimate Amount: the final total
Estimate Date: the estimate date
Status: the status

Answer 1

To print the line, I suggest you to simply iterate on each line of the file as follows:
def option_A():
es_num = str.upper (input ("Please enter the estimate number: "))
result = "Not found"
with open('paintingJobs.txt', 'r') as file:
for line in file:
if es_num in line:
result = line
break
print(result)
To format the display, you can split the line with comma as separator to get a list of information. Then format your display, as follows:
data = result.split(',')
print("Estimated number:{0}".format(data[0]))
print("Customer ID:{0}".format(data[2]))
...etc...
Then if you need some data which are more complex to retrieve from the text file, the powerful way is to use regex with for instance the method re.match(...).