我们从Python开源项目中，提取了以下15个代码示例，用于说明如何使用linecache._ipython_cache()。
def __init__(self): codeop.Compile.__init__(self) # This is ugly, but it must be done this way to allow multiple # simultaneous ipython instances to coexist. Since Python itself # directly accesses the data structures in the linecache module, and # the cache therein is global, we must work with that data structure. # We must hold a reference to the original checkcache routine and call # that in our own check_cache() below, but the special IPython cache # must also be shared by all IPython instances. If we were to hold # separate caches (one in each CachingCompiler instance), any call made # by Python itself to linecache.checkcache() would obliterate the # cached data from the other IPython instances. if not hasattr(linecache, '_ipython_cache'): linecache._ipython_cache = {} if not hasattr(linecache, '_checkcache_ori'): linecache._checkcache_ori = linecache.checkcache # Now, we must monkeypatch the linecache directly so that parts of the # stdlib that call it outside our control go through our codepath # (otherwise we'd lose our tracebacks). linecache.checkcache = check_linecache_ipython
def cache(self, code, number=0): """Make a name for a block of code, and cache the code. Parameters ---------- code : str The Python source code to cache. number : int A number which forms part of the code's name. Used for the execution counter. Returns ------- The name of the cached code (as a string). Pass this as the filename argument to compilation, so that tracebacks are correctly hooked up. """ name = code_name(code, number) entry = (len(code), time.time(), [line+'\n' for line in code.splitlines()], name) linecache.cache[name] = entry linecache._ipython_cache[name] = entry return name
def check_linecache_ipython(*args): """Call linecache.checkcache() safely protecting our cached values. """ # First call the orignal checkcache as intended linecache._checkcache_ori(*args) # Then, update back the cache with our data, so that tracebacks related # to our compiled codes can be produced. linecache.cache.update(linecache._ipython_cache)
