mirror of
https://github.com/pocketpy/pocketpy
synced 2025-11-10 05:30:16 +00:00
57 lines
1015 B
Python
57 lines
1015 B
Python
try:
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import os
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import io
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except ImportError:
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exit(0)
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a = open('123.txt', 'wt')
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a.write('123')
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a.write('456')
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a.close()
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with open('123.txt', 'rt') as f:
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assert f.read() == '123456'
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with open('123.txt', 'a') as f:
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f.write('测试')
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# default mode is 'r'
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with open('123.txt') as f:
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assert f.read() == '123456' + '测试'
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assert os.path.exists('123.txt')
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os.remove('123.txt')
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assert not os.path.exists('123.txt')
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with open('123.bin', 'wb') as f:
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f.write('123'.encode())
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f.write('测试'.encode())
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def f():
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with open('123.bin', 'rb') as f:
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b = f.read()
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assert isinstance(b, bytes)
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assert b == '123测试'.encode()
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f()
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assert os.path.exists('123.bin')
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os.remove('123.bin')
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assert not os.path.exists('123.bin')
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f = open("123.txt","w+")
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# read 0 sized file
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assert( f.read() == "")
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# write, rewind() and read whole back
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f.write("123456")
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f.seek(0)
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assert ( f.read() == "123456" )
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f.seek(3)
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assert ( f.read() == "456" )
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f.close()
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os.remove('123.txt')
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