python 2.7 - Writing between between characters in a text file? -



python 2.7 - Writing between between characters in a text file? -

i have module want write into. i'm having several problems. 1 of locating string within file. open file, utilize line in (filename), if determine if finds string, , of works. before (it commented out now) tried determine position @ using tell(). gave me wrong position, giving me 1118 believe, instead of 660 something. determined position manually utilize seek.

however sec problem was, if write file @ position in file, overwrites info thereon. want insert info instead of overwriting it.

unless insert string equal in character length want write happen, override of if statements , things below.

is there way naively this?

here file want write into

# filename: neo_usercurves.py # created by: gregory smith # description: script containing library of user created curves # purpose: library store names of user curves, , deletes curves # if specified import os import maya.cmds mc import module_locator my_path = module_locator.module_path() def usercurve_lib(fbxfile=none, remove=none): """all control/curve objects created user keyword arguments: fbxfile -- (string) name of fbx file import remove -- (boolean) remove entry library , delete associated fbx file """ curves_dict = { #crvstart #crvend } if remove none: homecoming curves_dict elif not remove: try: name = mc.file(curves_dict[fbxfile], typ='fbx', i=1, iv=true, pmt=false) homecoming name[0] except runtimeerror: homecoming none else: try: os.remove('%s\%s.fbx' %(my_path, fbxfile)) homecoming '%s.fbx' %(fbxfile) except oserror: print 'file %s not exist.' %(fbxfile) homecoming none

this code below i'm running in module called neo_curves.py (this not finish code, , 'my_path' path of current directory neo_curves.py beingness run in)

def create_entry(self, crv): """exports user curve user info directory , adds entry neo_usercurves.py keyword arguments: crv -- (pynode) object export """ # set settings mel.eval('fbxexportfileversion "fbx201400"') mel.eval('fbxexportinputconnections -v 0') select(crv) mc.file('%s\userdat\%s.fbx' %(my_path, str(crv)), force=true, options='', typ='fbx export', pr=true, es=true) open('%s\userdat\\neo_usercurves.py' %(my_path), 'r+') usercrvs: line in usercrvs: if line.strip() == '#crvstart': #linepos = usercrvs.tell() #linepos = int(linepos) #usercrvs.seek(linepos, 0) usercrvs.seek(665, 0) usercrvs.write("\n "+str(crv)+" : '%s\%s' %(my_path, '"+ str(crv)+".fbx')") break

this give me result below:

# filename: neo_usercurves.py # created by: gregory smith # description: script containing library of user created curves # purpose: library store names of user curves, , deletes curves # if specified import os import maya.cmds mc import module_locator my_path = module_locator.module_path() def usercurve_lib(fbxfile=none, remove=none): """all control/curve objects created user keyword arguments: fbxfile -- (string) name of fbx file import remove -- (boolean) remove entry library , delete associated fbx file """ curves_dict = { #crvstart loop_crv : '%s\%s' %(my_path, 'loop_crv.fbx') homecoming curves_dict elif not remove: try: name = mc.file(curves_dict[fbxfile], typ='fbx', i=1, iv=true, pmt=false) homecoming name[0] except runtimeerror: homecoming none else: try: os.remove('%s\%s.fbx' %(my_path, fbxfile)) homecoming '%s.fbx' %(fbxfile) except oserror: print 'file %s not exist.' %(fbxfile) homecoming none

in short: on operating systems can not insert files without rewriting if lengths not same.

have @ long give-and-take here: why can not insert files without additional writes? (i neither mean append, nor over-write)

python-2.7 fwrite

Comments

Post a Comment

Popular posts from this blog

Delphi change the assembly code of a running process -

Delphi change the assembly code of a running process - i'm trying alter address 00741fa5 has push test.009e721c . alter push test.009e71c8 . procedure callback; asm force $9e71c8 end; procedure tform2.btn1click(sender: tobject); var ppid :dword; pprocess : cardinal; begin getwindowthreadprocessid(findwindow(nil,pchar('test')), @ppid); pprocess := openprocess(process_all_access, false, ppid); injectasm(pprocess, $741fa5, 10, integer(@callback), 0); end; here injectasm function (with error checking) function injectasm(process: longword; injectaddress, injectsize, codeaddress, codesize : integer): pointer; var csize, rsize : integer; replaced : array of byte; jmp : array [0..4] of byte; jmpaddress : integer; nopv : byte; : integer; nbr: ulong_ptr; begin //injectsize must equal or greater 5, because need space our //(far) jmp wwxxyyzz instruction //if there's no space, inject in place of few instructions if injectsize ...
Read more

json - Hibernate and Jackson (java.lang.IllegalStateException: Cannot call sendError() after the response has been committed) -

json - Hibernate and Jackson (java.lang.IllegalStateException: Cannot call sendError() after the response has been committed) - hello have problem hibernate , jackson. have 2 pojos @entity @table(name = "users") public class user implements serializable { static final long serialversionuid = 4235637833262722256l; @id @generatedvalue private int id; @column(name = "creation_date") private date creationdate; @column(name = "first_name") private string firstname; @column(name = "last_name") private string lastname; @version @column(name = "version") private int version; @column(name = "e_mail") private string email; @column(name = "enabled") private boolean enabled; @column(name = "login") private string login; @column(name = "password") private string password; @jsonmanagedreference("role") @onetomany(mappedby = "user", cascade = cascadetype.all,fetch = fetchtyp...
Read more

C++ 11 "class" keyword -

C++ 11 "class" keyword - i've started using c++ 11 little bit more , have few questions on special uses of class keyword. know it's used declare class, there's 2 instances have seen don't understand: method<class t>(); and class class_name *var; why precede typename keyword class in first example, , keyword pointer in sec example? that known elaborated type specifier , necessary when class name "shadowed" or "hidden" , need explicit. class t { }; // love of god don't t t; t t2; if compiler smart, give these warnings: main.cpp:15:5: error: must utilize 'class' tag refer type 't' in scope t t2; ^ class main.cpp:14:7: note: class 't' hidden non-type declaration of 't' here t t; ^ if class not defined, deed forwards declaration. for example: template <typename t> void method() { using type = typename t::value_type; } method...
Read more