add " characters in write function python

Question

I have a code that emits this output

file.write(row['time'] + "{application=" + row['application'] + ",runtime=" + str(row['runtime']) + "} " + row['value'] + "\n")

output:

folder_put_time{application=app1,runtime=1231231231} 17

I want the format to be as following:

folder_put_time{application="app1", runtime="1231231231"} 19

How can I add the " sign in code? + "/"" didn't work for me

Thanks

Answer 1

Since your data is already in a dict (or a mapping object anyway), I think the cleanest option here is to use str.format_map (though the double {{ }} to escape the other quotes are a bit ugly still:)

file.write('{time}{{application="{application}",runtime="{runtime}"}} {value}\n'.format_map(row))

You could use \" to escape quotes:

file.write(row['time'] + "{application=\"" + row['application'] + "\",runtime=\"" + str(row['runtime']) + "\"} " + row['value'] + "\n")

or use a single-quoted string and just use plain " within the string:

file.write(row['time'] + '{application="' + row['application'] + '",runtime="' + str(row['runtime']) + '"} ' + row['value'] + '\n')

You could also use an f-string for less str() casts, but accessing dicts within an f-string is a bit ugly (and curly braces need to be escaped by doubling).

file.write(f'{row["time"]}{{application=\"{row["application"]}\",runtime=\"{row["runtime"]}\"}} {row["value"]}\n')