circuitpython/tests/io/file_readinto.py

b = bytearray(30)
f = open("io/data/file1", "rb")
print(f.readinto(b))
print(b)
f = open("io/data/file2", "rb")
print(f.readinto(b))
print(b)

# readinto() on writable file
f = open("io/data/file1", "ab")
try:
    f.readinto(bytearray(4))
except OSError:
    print("OSError")
unix, stmhal: Implement file.readinto() method. Also, usocket.readinto(). Known issue is that .readinto() should be available only for binary files, but micropython uses single method table for both binary and text files. 2014-10-18 15:44:07 -04:00			`b = bytearray(30)`
			`f = open("io/data/file1", "rb")`
			`print(f.readinto(b))`
			`print(b)`
			`f = open("io/data/file2", "rb")`
			`print(f.readinto(b))`
			`print(b)`
tests: Add tests for stream IO errors. 2015-12-23 17:37:02 -05:00
			`# readinto() on writable file`
tests: Format all Python code with black, except tests in basics subdir. This adds the Python files in the tests/ directory to be formatted with ./tools/codeformat.py. The basics/ subdirectory is excluded for now so we aren't changing too much at once. In a few places `# fmt: off`/`# fmt: on` was used where the code had special formatting for readability or where the test was actually testing the specific formatting. 2020-03-22 22:26:08 -04:00			`f = open("io/data/file1", "ab")`
tests: Add tests for stream IO errors. 2015-12-23 17:37:02 -05:00			`try:`
			`f.readinto(bytearray(4))`
			`except OSError:`
tests: Format all Python code with black, except tests in basics subdir. This adds the Python files in the tests/ directory to be formatted with ./tools/codeformat.py. The basics/ subdirectory is excluded for now so we aren't changing too much at once. In a few places `# fmt: off`/`# fmt: on` was used where the code had special formatting for readability or where the test was actually testing the specific formatting. 2020-03-22 22:26:08 -04:00			`print("OSError")`