80 lines
1.4 KiB
Plaintext
80 lines
1.4 KiB
Plaintext
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Let's do a walk through a memory filesystem.
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.. >>> import py
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working with directories
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---------------------------------
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Let's create some directories and list them from memory::
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>>> fs = py.fs.MemoryFS()
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>>> fs.mkdir("x")
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>>> fs.mkdir("y")
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>>> fs.listdir()
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['x', 'y']
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Creating, removing and reading files
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---------------------------------------------
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>>> f = fs.open('x/file', 'w')
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>>> f.write("hello world")
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>>> f.close()
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>>> fs.listdir("x")
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['file']
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>>> f = fs.open("x/file", 'r')
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>>> f.readlines()
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['hello world']
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>>> f.seek(6)
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>>> f.read(3)
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"wor"
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>>> f.read()
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"ld"
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>>> f.close()
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>>> fs.remove("y")
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>>> fs.listdir()
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['x']
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>>> fs.remove("non-existent")
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py.error.ENOENT
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stat / checking for meta information
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---------------------------------------
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>>> stat = memory.stat("x")
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>>> stat.isdir()
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True
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>>> stat.isfile()
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False
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>>> stat.exists()
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True
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>>> stat.islink()
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False
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Linking to other objects
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--------------------------------------------------------
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First an example how to link internally, i.e. within the
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filesystem.
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>>> fs.link("newitem", "x")
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>>> fs.stat("newitem").islink()
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True
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>>> fs.stat("newitem").isfile()
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True
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>>> fs.remove("newitem") # only deletes the link itself
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>>> fs.stat("x").exists()
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cross-filesystem references
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---------------------------------
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>>> otherfs = py.fs.MemoryFS()
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XXX
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>>> fs.setproxy("newitem", otherfs, "otheritem")
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>>> fs.stat("newitem").exists()
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False
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>>> otherfs.mkdir("otheritem")
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