circuitpython/tests/io/file1.py

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f = open("io/data/file1")
print(f.read(5))
print(f.readline())
print(f.read())
f = open("io/data/file1")
print(f.readlines())
f = open("io/data/file1", "r")
print(f.readlines())
f = open("io/data/file1", "rb")
print(f.readlines())
f = open("io/data/file1", mode="r")
print(f.readlines())
f = open("io/data/file1", mode="rb")
print(f.readlines())
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# write() error
f = open("io/data/file1", "r")
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try:
f.write("x")
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except OSError:
print("OSError")
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f.close()
# read(n) error on binary file
f = open("io/data/file1", "ab")
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try:
f.read(1)
except OSError:
print("OSError")
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f.close()
# read(n) error on text file
f = open("io/data/file1", "at")
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try:
f.read(1)
except OSError:
print("OSError")
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f.close()
# read() w/o args error
f = open("io/data/file1", "ab")
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try:
f.read()
except OSError:
print("OSError")
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f.close()