Python: How to keep a variable in memory such that it can be called from other python scripts? -

-

there module named tzwhere in python. when load in tz variable in:-

from tzwhere import tzwhere tz = tzwhere.tzwhere(shapely=true)

the line above takes 45 seconds load , scope until particular python session stopped. after line can many outputs of tz.tznameat(latitude, longitude) want, problem these outputs calculated in python shell.

i want make tz variable shareable api, such if tz variable called python session or if java program using exec command, neither should take 45 seconds load again , nor should give me nameerror: name 'tz' not defined.

please help. thank much!!

you use pickle module can store class instances in files.

try this:

 tzwhere import tzwhere  tz = tzwhere.tzwhere(shapely=true)   import pickle   # dump variable tz file save.p  pickle.dump( tz, open( "save.p", "wb" ) )

to load tz script do:

import pickle  tz = pickle.load( open( "save.p", "rb" ) )

note: python 2 only, use faster version automatically if on python3

if still unhappy speed when loading tz script, there accelerated version of pickle called cpickle

just do:

import cpickle pickle

for more information goto link: https://wiki.python.org/moin/usingpickle


Comments

Post a Comment

Popular posts from this blog

java - Static nested class instance -

-
this question has answer here: java inner class , static nested class 23 answers i came across in java, know static nested class why create instance of 'static'. isn't whole idea of 'static' use without instance? understand concept of inner classes, why (and frankly how possible to) create 'instance' of 'static' member @ ? why this: 1- outerclass.staticnestedclass nestedobject = new outerclass.staticnestedclass(); 2- nestedobject.anestedclassmethod(); and not this: 1- outerclass outerinstance=new outerclass(); 2- outerinstance.staticnestedclass.anestedclassmethod(); use on inner classes, keyword static indicates can access inner class without instance of outer class. for example: public class outer { public static class inner { /* code here. */ } } with construction, can create instance of inn
Read more

c# - Bluetooth LE CanUpdate Characteristic property -

-
i building xamarin.forms cross platform mobile app, uses monkey.robotics bluetoth low energy functionality. connecting mbed based implimentation of custom gatt service . in xamarin c#, triggers characteristic. canupdate property in monkey.robotics? this standard example c# based on: if (characteristic.canupdate) { characteristic.valueupdated += (s, e) => { debug.writeline("characteristic.valueupdated"); device.begininvokeonmainthread( () => { updatedisplay(characteristic); }); isbusy = false; // spin until first result received }; isbusy = true; characteristic.startupdates(); } this has been working, since changed own custom gatt service connecting to, canupdate property false. property , how triggered? me debugging gatt service code. thanks monkey.robotics open sour
Read more

JavaScript - Replace variable from string in all occurrences -

-
ok, know if have character '-' , want remove in places in string javascript, ... someword = someword.replace(/-/g, ''); but, when applying array of characters, s not working ... const badchars = ('\/:*?"<>|').split(''); let filename = title.replace(/ /g, '-').tolocalelowercase(); (let item = 0; item < badchars.length; item++) { // below not work global '/ /g' filename = filename.replace(/badchars[item]/g, ''); } any ideas? /badchars[item]/g looks badchars , literally, followed i , t , e , or m . if you're trying use character badchars[item] , you'll need use regexp constructor, , you'll need escape regex-specific characters. escaping regular expression has been well-covered . using that: filename = filename.replace(new regexp(regexp.quote(badchars[item]), 'g'), ''); but , don't want that. want character class: let filename = title.replac
Read more