python - Split string by number of whitespaces -


i have string looks either of these 3 examples:

1: name             = astring               comments 2: typ              = 1 2 thee             must "sand", "mud" or "bedload" 3: rdw    = 0.02      [ - ] comment rdw

i first split variable name , rest so:

re.findall(r'\s*([a-za-z0-9_]+)\s*=\s*(.*)', line)

i want split right part of string part containing values , part containing comments (if there any). want looking @ number of whitespaces. if exceeds 4, assume comments start

any idea on how this?

i have

re.findall(r'(?:(\s+)\s{0,3})+', datastring)

however if test using string:

'aa    aa23r234rf2134213^$&$%&            bb'

then selects 'bb'

you may use single regex re.findall:

^\s*(\w+)\s*=\s*(.*?)(?:(?:\s{4,}|\[)(.*))?$

see regex demo.

details:

  • ^ - start of string
  • \s* - 0+ whitespaces
  • (\w+) - capturing group #1 matching 1 or more letters/digits/underscores
  • \s*=\s* - = enclosed 0+ whitespaces
  • (.*?) - capturing group #2 matching 0+ chars, few possible, first...
  • (?:(?:\s{4,}|\[)(.*))? - optional group matching
    • (?:\s{4,}|\[) - 4 or more whitespaces or [
    • (.*) - capturing group #3 matching 0+ chars to
  • $ - end of string.

Comments

Post a Comment

Popular posts from this blog

inversion of control - Autofac named registration constructor injection -

does autofac support specifying registration name in components' constructors? example: ninject's namedattribute . you need use autofac.extras.attributed package on top achieve this so let's have 1 interface , 2 classes: public interface ihello { string sayhello(); } public class englishhello : ihello { public string sayhello() { return "hello"; } } public class frenchhello : ihello { public string sayhello() { return "bonjour"; } } then have consumer class, in want select instance injected: public class helloconsumer { private readonly ihello helloservice; public helloconsumer([withkey("en")] ihello helloservice) { if (helloservice == null) { throw new argumentnullexception("helloservice"); } this.helloservice = helloservice; } public string sayhello() { return this.helloservice.sayhello()...
Read more

verilog - Systemverilog dynamic casting issues -

i've code snippet following in testbench function void write_to_port( my_data_type_base data ); my_data_type_extended data_ext; if(!$cast(data_ext, data)); `uvm_error(get_type_name(), "failed cast"); `uvm_info(get_name(), $psprintf("data_ext :\n%s", data_ext.sprint()), uvm_medium) // write data_ext out port.... endfunction when run it, i'm getting uvm_error "failed cast." i'm not quire sure why $cast not returning 1. can see, i'm printing out extended class data item after casting uvm_info. can see it's being cast properly. if don't use $cast if condition, don't runtime error. isn't coding practice use if dynamic cast check if $cast returning 1 ? what might reason behind cast not returning 1 in above case? i think semicolon on line 'if' not belong? i think consumes if statement, , uvm_error executes regardless of how if evaluates: if(!$cast(data_ext, data)); <- no semico...
Read more

ios - Change Storyboard View using Seague -

i have following code checks connection server, , depending on want change views if no connection found. nsstring *connect = [nsstring stringwithcontentsofurl:[nsurl urlwithstring:@"http://myserver.com"] encoding:nsutf8stringencoding error:nil]; if (connect == null) { [self performseguewithidentifier:@"network_failure" sender:self]; } else { // other code here } my problem not change views. have added storyboard segue between 2 views identifier of network_failure . not have navigation controller or that, problem? thanks help! no not problem. first of all, in objectivec exists nil object oriented null . must use that. so: if(connect == nil) or better: if(!connect) so due fact nil not same of null , probably code does't enter in if scope . you have been able discover breakpoint. anyway: be sure set trigger segue (line) 2 view controller , , name network_failure (that not best name. should instead view1toview2 ) as, m...
Read more