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Python 技術手冊 第三版
book

Python 技術手冊 第三版

by lex Martelli, Anna Martelli Ravenscroft, Steve Holden
January 2018
Intermediate to advanced content levelIntermediate to advanced
856 pages
17h 17m
Chinese
GoTop Information, Inc.
Content preview from Python 技術手冊 第三版
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6 章 模組
# 只在 v3 中運行:充填已經初始化的模組
# 在這個玩具範例中只印出一個訊息
print('NOTE: module {!r} not yet written'.format(mod))
def load_module(self, fullname):
# 只在 v2 中運行:製作並充填模組
if fullname in sys.modules: return sys.modules[fullname]
# 在這個玩具範例中只印出一個訊息
print('NOTE: module {!r} not written yet'.format(fullname))
# 製作新的空模組,將它放入 sys.modules
mod = sys.modules[fullname] = types.ModuleType(fullname)
# 最小程度地初始化新模組並將之回傳
mod.__file__ = 'dummy_{}'.format(fullname)
mod.__loader__ = self
return mod
# 將此類別加到掛接器(hook),並將其虛構路徑標示器加到路徑
sys.path_hooks.append(ImporterAndLoader)
sys.path.append(ImporterAndLoader.fake_path)
if __name__ == '_ _main_ _': # 作為主要指令稿執行時的自我測試
import missing_module ...
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Publisher Resources

ISBN: 9789864766819