How can I break up this long line in Python

Question

How would you go about formatting a long line such as this  I d like to get it to no more than 80 characters wide   logger info  Skipping  0  because its thumbnail was already in our system as  1    format line indexes  url     video title     Is this my best option   url    Skipping  0  because its thumbnail was already in our system as  1    logger info url format line indexes  url     video title

User · Answer

For anyone who is also trying to call  format   on a long string  and is unable to use some of the most popular string wrapping techniques without breaking the subsequent  format  call  you can do str format     1  2  instead of    format 1  2   This lets you break the string with whatever technique you like  For example   logger info  Skipping  0  because its thumbnail was already in our system as  1    format line indexes  url     video title     can be  logger info str format   Skipping  0  because its thumbnail was already     in our system as  1     line indexes  url     video title     Otherwise  the only possibility is using line ending continuations  which I personally am not a fan of

User · Answer

You can use textwrap module to break it in multiple lines  import textwrap str  ABCDEFGHIJKLIMNO  print   n  join textwrap wrap str 8         ABCDEFGH   IJKLIMNO   From the documentation      textwrap wrap text   width            Wraps the single paragraph in text  a string  so every line is at most width characters long  Returns a list of output lines  without final newlines       Optional keyword arguments correspond to the instance attributes of TextWrapper  documented below  width defaults to 70       See the TextWrapper wrap   method for additional details on how wrap   behaves

User · Answer

Personally I dislike hanging open blocks  so I d format it as   logger info       Skipping  0  because its thumbnail was already in our system as  1         format line indexes  url     video title      In general I wouldn t bother struggle too hard to make code fit exactly within a 80-column line  It s worth keeping line length down to reasonable levels  but the hard 80 limit is a thing of the past

User · Answer

Consecutive string literals are joined by the compiler  and parenthesized expressions are considered to be a single line of code   logger info  Skipping  0  because it s thumbnail was      already in our system as  1    format line indexes  url       video title

User · Answer

That s a start   It s not a bad practice to define your longer strings outside of the code that uses them   It s a way to separate data and behavior   Your first option is to join string literals together implicitly by making them adjacent to one another     This is the first line of my text     which will be joined to a second      Or with line ending continuations  which is a little more fragile  as this works    This is the first line of my text       which will be joined to a second     But this doesn t    This is the first line of my text        which will be joined to a second     See the difference   No   Well you won t when it s your code either   The downside to implicit joining is that it only works with string literals  not with strings taken from variables  so things can get a little more hairy when you refactor   Also  you can only interpolate formatting on the combined string as a whole   Alternatively  you can join explicitly using the concatenation operator         This is the first line of my text        which will be joined to a second      Explicit is better than implicit  as the zen of python says  but this creates three strings instead of one  and uses twice as much memory  there are the two you have written  plus one which is the two of them joined together  so you have to know when to ignore the zen   The upside is you can apply formatting to any of the substrings separately on each line  or to the whole lot from outside the parentheses   Finally  you can use triple-quoted strings      This is the first line of my text which will be joined to a second       This is often my favorite  though its behavior is slightly different as the newline and any leading whitespace on subsequent lines will show up in your final string   You can eliminate the newline with an escaping backslash        This is the first line of my text   which will be joined to a second       This has the same problem as the same technique above  in that correct code only differs from incorrect code by invisible whitespace   Which one is  best  depends on your particular situation  but the answer is not simply aesthetic  but one of subtly different behaviors

[python] How can I break up this long line in Python?

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