i*dZddlZddlZddlZddlZddlZddlZddlZddlZdZ gdZ ejZ ddZ GddejZddd d Zd ed efd ZGddej(ZdedefdZy)zU lazy_loader =========== Makes it easy to load subpackages and functions on demand. Nz0.4)attachload attach_stubc |i} tn t|jDcic]\}}|D]}||c}}} t jz fd}fd}tj j ddr)t jzD] }|| ||tfScc}}}w)a8Attach lazily loaded submodules, functions, or other attributes. Typically, modules import submodules and attributes as follows:: import mysubmodule import anothersubmodule from .foo import someattr The idea is to replace a package's `__getattr__`, `__dir__`, and `__all__`, such that all imports work exactly the way they would with normal imports, except that the import occurs upon first use. The typical way to call this function, replacing the above imports, is:: __getattr__, __dir__, __all__ = lazy.attach( __name__, ['mysubmodule', 'anothersubmodule'], {'foo': ['someattr']} ) This functionality requires Python 3.7 or higher. Parameters ---------- package_name : str Typically use ``__name__``. submodules : set List of submodules to attach. submod_attrs : dict Dictionary of submodule -> list of attributes / functions. These attributes are imported as they are used. Returns ------- __getattr__, __dir__, __all__ c|vrtjd|S|vrWd|}tj|}t||}||k(r"tj}||j |<|St dd|)N.zNo z attribute ) importlib import_modulegetattrsysmodules__dict__AttributeError)name submod_pathsubmodattrpkgattr_to_modules package_name submoduless y/var/www/ITT-ServiceAPI-Services/ITT-Document-Scan/mrzscanner/mrzenv/lib/python3.12/site-packages/lazy_loader/__init__.py __getattr__zattach..__getattr__Ms : **l^1TF+CD D _ $)N!OD,A+BCK,,[9F64(D t,,kk,/%) T"K 3|nKv!FG GcSN)__all__sr__dir__zattach..__dir__`sr EAGER_IMPORT)setitemssortedkeysosenvirongetlist) rr submod_attrsmodattrsrrrrrs `` @@rrrsN U _ %1$6$6$8 c5U=Ac  OZ/"6"6"889GH& zz~~nb),,./*< D    g ..AsC c(eZdZfdZfdZxZS)DelayedImportErrorModulec@||_||_t| |i|yr)%_DelayedImportErrorModule__frame_data"_DelayedImportErrorModule__messagesuper__init__)self frame_datamessageargskwargs __class__s rr3z!DelayedImportErrorModule.__init__ks$&  $)&)rc|dvrt||y|j}t|jd|dd|dd|ddd j |d xsd j ) N)r9__file__ __frame_data __messagezE This error is lazily reported, having originally occured in File filenamez, line linenoz, in functionz ----> r! code_context)r2rr0ModuleNotFoundErrorr1joinstrip)r4xfdr9s rrz$DelayedImportErrorModule.__getattr__ps F F G  """B%>>"#Z.)HeBzNCSTN!3!9r:@@BCE r)__name__ __module__ __qualname__r3r __classcell__)r9s@rr.r.js*  rr.F)requireerror_on_importcpt5tjj|}|du}|r | |cdddSd|vrd}t j |t d}|s#tjj|}|du}|sd|d}n| t|}d|d}|sl|r td dl } | jd } | j| j | j"| j$d } t'| d  ~ cdddS|ltjj)|}|tj|<tjj+|j,} | j/|ddd|S#t$r}td|d|d}~wwxYw#~ wxYw#1swYSxYw)aReturn a lazily imported proxy for a module. We often see the following pattern:: def myfunc(): import numpy as np np.norm(...) .... Putting the import inside the function prevents, in this case, `numpy`, from being imported at function definition time. That saves time if `myfunc` ends up not being called. This `load` function returns a proxy module that, upon access, imports the actual module. So the idiom equivalent to the above example is:: np = lazy.load("numpy") def myfunc(): np.norm(...) .... The initial import time is fast because the actual import is delayed until the first attribute is requested. The overall import time may decrease as well for users that don't make use of large portions of your library. Warning ------- While lazily loading *sub*packages technically works, it causes the package (that contains the subpackage) to be eagerly loaded even if the package is already lazily loaded. So, you probably shouldn't use subpackages with this `load` feature. Instead you should encourage the package maintainers to use the `lazy_loader.attach` to make their subpackages load lazily. Parameters ---------- fullname : str The full name of the module or submodule to import. For example:: sp = lazy.load('scipy') # import scipy as sp require : str A dependency requirement as defined in PEP-508. For example:: "numpy >=1.24" If defined, the proxy module will raise an error if the installed version does not satisfy the requirement. error_on_import : bool Whether to postpone raising import errors until the module is accessed. If set to `True`, import errors are raised as soon as `load` is called. Returns ------- pm : importlib.util._LazyModule Proxy module. Can be used like any regularly imported module. Actual loading of the module occurs upon first attribute request. Nrzsubpackages can technically be lazily loaded, but it causes the package to be eagerly loaded even if it is already lazily loaded.So, you probably shouldn't use subpackages with this lazy feature.zNo module named ''zFound module 'zf' but cannot test requirement '{require}'. Requirements must match distribution name, not module name.z'No distribution can be found matching 'r)r>r?r@rAr.)r6) threadlockr r r(warningswarnRuntimeWarningr util find_spec_check_requirementrB ValueErrorinspectstackr>r?r@rAr.module_from_spec LazyLoaderloader exec_module) fullnamerKrLmodule have_modulemsgspecnot_found_messageerXparentr5r\s rrr}s~ >'*D(  7? >'>' (?U  MM#~ .>>++H5Dd*K"3H:Q ?    09 #J'RS T )*;<<   + &$mm &$*$7$7  0.- o>'>'r  ^^44T:F$*CKK !^^..t{{;F   v &}>'@ MK'  $XJ/RR  8o>'@ MsU)F+AF+ FF+2AF%F+ A.F+ F" FF""F+%F((F++F5rKreturncddl} ddlm}|j j |}|jj|j|jdS#t$rddl}Y`wxYw)aVerify that a package requirement is satisfied If the package is required, a ``ModuleNotFoundError`` is raised by ``importlib.metadata``. Parameters ---------- require : str A dependency requirement as defined in PEP-508 Returns ------- satisfied : bool True if the installed version of the dependency matches the specified version, False otherwise. rNT) prereleases) packaging.requirementsimportlib.metadatametadata ImportErrorimportlib_metadata requirements Requirement specifiercontainsversionr)rK packagingrmreqs rrVrVsl"""7  , ,W 5C == ! !""388, "  "!"sA A-,A-c6eZdZdZdZdej fdZy) _StubVisitorzAAST visitor to parse a stub file for submodules and submod_attrs.c0t|_i|_yr)r" _submodules _submod_attrs)r4s rr3z_StubVisitor.__init__!s5rnodec|jdk7r td|jrx|jj |jg}|j Dcgc]}|j }}d|vrtd|jd|j|y|jjd|j Dycc}w)NrOz;Only within-module imports are supported (`from .* import`)*z4lazy stub loader does not support star import `from z import *`c34K|]}|jywr)r).0aliass r z0_StubVisitor.visit_ImportFrom..4s#G5EJJ#Gs) levelrWr_ry setdefaultnamesrextendrxupdate)r4rzr,raliasess rvisit_ImportFromz_StubVisitor.visit_ImportFrom%s ::?M  ;;,,77 RHE/3zz:euzz:G:g~ ![[M5 LL !    # ##GDJJ#G G;sC N)rGrHrI__doc__r3ast ImportFromrrrrrvrvsK HS^^Hrrvrr>c|jdr|n$tjj|dd}tjj |st d|t |5}tj|j}dddt}|jt||j|jS#1swYExYw)a#Attach lazily loaded submodules, functions from a type stub. This is a variant on ``attach`` that will parse a `.pyi` stub file to infer ``submodules`` and ``submod_attrs``. This allows static type checkers to find imports, while still providing lazy loading at runtime. Parameters ---------- package_name : str Typically use ``__name__``. filename : str Path to `.py` file which has an adjacent `.pyi` file. Typically use ``__file__``. Returns ------- __getattr__, __dir__, __all__ The same output as ``attach``. Raises ------ ValueError If a stub file is not found for `filename`, or if the stubfile is formmated incorrectly (e.g. if it contains an relative import from outside of the module) irz.pyiz+Cannot load imports from non-existent stub N)endswithr&pathsplitextexistsrWopenrparsereadrvvisitrrxry)rr>stubfilef stub_nodevisitors rrr7s6%%c*2773C3CH3Ma3P2QQU0V  77>>( #FxlSTT h(1IIaffh' (nG MM) , 3 3W5J5J KK ((s 1$CC")NN)rrr importlib.utilr&r threadingtypesrQ __version__rLockrPr ModuleTyper.rstrboolrV NodeVisitorrvrrrrrs    +Y^^  O/du//&#ED>H3??H2&Lc&LS&Lr