大约有 12,000 项符合查询结果(耗时:0.0277秒) [XML]
How do I copy an entire directory of files into an existing directory using Python?
... containing one or more files). Make sure there is not a directory named foo .
14 Answers
...
Mocking a class: Mock() or patch()?
...MyClass')
... def create_instance2(MyClass):
... MyClass.return_value = 'foo'
... return create_instance()
...
>>> i = create_instance2()
>>> i
'foo'
>>> def create_instance():
... print MyClass
... return MyClass()
...
>>> create_instance2()
<mock.Moc...
Is SQL syntax case sensitive?
...es, then yes they are, but not the commands themselves.
So
SELECT * FROM foo;
is the same as
select * from foo;
but not the same as
select * from FOO;
share
|
improve this answer
|...
What happens when there's insufficient memory to throw an OutOfMemoryError?
... try {
for (int n = 1; true; n += n) {
int[] foo = new int[n];
}
} catch (OutOfMemoryError e) {
if (e == o)
System.out.println("Got the same OutOfMemoryError twice: " + e);
else test(e);
}
}
pub...
How to construct a relative path in Java from two absolute paths (or URLs)?
... dir
// For example, the relative path from
//
// /foo/bar/baz/gg/ff to /foo/bar/baz
//
// ".." if ff is a file
// "../.." if ff is a directory
//
// The following is a heuristic to figure out if the base refers to a file or dir. It's ...
How to get name of exception that was caught in Python?
...tion.__class__.__name__
exception.__class__.__qualname__
e.g.,
try:
foo = bar
except Exception as exception:
assert type(exception).__name__ == 'NameError'
assert exception.__class__.__name__ == 'NameError'
assert exception.__class__.__qualname__ == 'NameError'
...
How do I append one string to another in Python?
...neck caused by string concatenations then just stick with + and +=:
s = 'foo'
s += 'bar'
s += 'baz'
That said, if you're aiming for something like Java's StringBuilder, the canonical Python idiom is to add items to a list and then use str.join to concatenate them all at the end:
l = []
l.append...
How/When does Execute Shell mark a build as failure in Jenkins?
... exit code, you can either hoist the command into your if statement:
grep foo bar; if [ $? == 0 ]; then ... --> if grep foo bar; then ...
Or you can capture the return code in your || clause:
grep foo bar || ret=$?
...
What are the main purposes of using std::forward and which problems it solves?
...the function the parameter could be passed as an lvalue to anything:
void foo(int&);
template <typename T>
void deduce(T&& x)
{
foo(x); // fine, foo can refer to x
}
deduce(1); // okay, foo operates on x which has a value of 1
That's no good. E needs to get the same kind o...
What is the python “with” statement designed for?
...sulated for convenient reuse.
2.
You could do something like:
with open("foo.txt") as foo_file:
data = foo_file.read()
OR
from contextlib import nested
with nested(A(), B(), C()) as (X, Y, Z):
do_something()
OR (Python 3.1)
with open('data') as input_file, open('result', 'w') as outpu...