1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
f = open("io/data/file1", "rb")
print(f.seek(6))
print(f.read(5))
print(f.tell())
print(f.seek(0, 1))
print(f.read(4))
print(f.tell())
print(f.seek(-6, 2))
print(f.read(20))
print(f.tell())
print(f.seek(0, 0))
print(f.read(5))
print(f.tell())
f.close()
# test text mode
f = open("io/data/file1", "rt")
print(f.seek(6))
print(f.read(5))
print(f.tell())
f.close()
# seek closed file
f = open('io/data/file1', 'r')
f.close()
try:
f.seek(1)
except (OSError, ValueError):
# CPy raises ValueError, uPy raises OSError
print('OSError or ValueError')
|
