Python：如何插入标签页并设置文本文件格式

Question

Bringing in a text file that is formatted like below:

hammer#9.95
saw#20.15
shovel#35.40

I need to bring it into python and format it so that it is in line with an existing snippet of code:

# display header line for items list print('{0: <10}'.format('Item'), '{0: >17}'.format('Cost'), sep = '' )

The goal is for the text file to be in line with existing headers like so:

Item   Cost
hammer $9.95
saw    $20.15
shovel $35.4

I can bring in the text file into Python and get replace the # sign with a $ sign:

file = open('Invoice.txt', 'r')
file_contents = file.read()
new_file_contents = file_contents.replace('#', '$')

Which gives me this output:

hammer$9.95
saw$20.15
shovel$35.40

but I'm having trouble with the formatting aspect. Any suggestions?

Answer 1

You can do something like this:

with open(file,'rt',encoding='utf-8') as infile:
    for line in infile:
        print("{:<6} {}".format(line.strip().split('#')[0],"$"+line.strip().split("#")[1]))

only problem is that it'll look ugly if you have a longer word than hammer. I suggest finding the largest word in your list first, then using that as the limiter for the {:<6}.