Hey Folks, I just got this message from a developer inside of ILM today. Before I start digging, can anyone tell me if this has been dealt with in any version of python more recent than 1.5.2? (and where I might look for this info myself- I'm very unfamiliar with sourceforge and its bug tracker)... thanks! Garrick Meeker writes: | ******** is starting to produce very long project files (over 32K lines) | which it currently can't read. (Because curves are imbedded in the | files, it's not difficult to hit that limit.) | | Here's what I've found so far (in both python 1.4 and 1.5): | | ******** read the file by calling PyRun_SimpleFile. This byte compiles | the entire file into memory and then runs that (which is probably not | ideal). | | The file is tokenized into nodes that have a 'short' for the line | number, so this wraps around to negative numbers. | | The line number is entered into the byte code with a call to | 'com_addint', which calls: | | com_addbyte(c, x & 0xff); | com_addbyte(c, x >> 8); /* XXX x should be positive */ | | (notice that 'x >> 8' for a negative number will be a negative number). | | com_addbyte has a sanity check: | | if (byte < 0 || byte > 255) { | com_error(c, PyExc_SystemError, "com_addbyte: byte out of range"); | | This is what prevents ******** from loading long files. The options I | see are: | | Fix our build of python to fix this problem. We can't change the line | number to 'int' because we'd be changing the byte code, but we could | stop the number from wrapping around. | | Manually read each line from the file and feed it to the interpreter as | if we were interactive. We'd lose the line number information if | there's an error in the file (but we can't save numbers over 32K | anyway). I think it would also be friendlier on memory because it | wouldn't byte compile the entire file first. There is a call to pass | strings in this manner, but I don't know if it will actually work this | way. | | Tommy, have you heard of this before? I know I still missing part of | the story because I can create a simple file with 40K lines of: | | a = 0 | | and python accepts it without error.