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Why python 2.7 doesn"t include Z character (Zulu or zero offset) at the end of UTC datetime object"s isoformat string unlike JavaScript?
>>> datetime.datetime.utcnow().isoformat()
"2013-10-29T09:14:03.895210"
Whereas in javascript
>>> console.log(new Date().toISOString());
2013-10-29T09:38:41.341Z
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Python UTC datetime object"s ISO format doesn"t include Z (Zulu or Zero offset) log: Questions
Python"s equivalent of && (logical-and) in an if-statement
5 answers
Here"s my code:
def front_back(a, b):
# +++your code here+++
if len(a) % 2 == 0 && len(b) % 2 == 0:
return a[:(len(a)/2)] + b[:(len(b)/2)] + a[(len(a)/2):] + b[(len(b)/2):]
else:
#todo! Not yet done. :P
return
I"m getting an error in the IF conditional.
What am I doing wrong?
Answer #1
You would want and instead of &&.
Answer #2
Python uses and and or conditionals.
i.e.
if foo == "abc" and bar == "bac" or zoo == "123":
# do something
Python UTC datetime object"s ISO format doesn"t include Z (Zulu or Zero offset) log: Questions
How do you get the logical xor of two variables in Python?
5 answers
How do you get the logical xor of two variables in Python?
For example, I have two variables that I expect to be strings. I want to test that only one of them contains a True value (is not None or the empty string):
str1 = raw_input("Enter string one:")
str2 = raw_input("Enter string two:")
if logical_xor(str1, str2):
print "ok"
else:
print "bad"
The ^ operator seems to be bitwise, and not defined on all objects:
>>> 1 ^ 1
0
>>> 2 ^ 1
3
>>> "abc" ^ ""
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: unsupported operand type(s) for ^: "str" and "str"
Answer #1
If you"re already normalizing the inputs to booleans, then != is xor.
bool(a) != bool(b)
