python-2.x

问题 I want to create some kind of debugging output for python and want to pass the functionname to another function for output. The only reasonable way I found to do so was: def foobar(): print 'hello world' print foobar.__name__ is there something that does the same thing for the current function to improve copy and pasting of that line? like the C equivalent printf("%s", __func__) . 回答1: sys._getframe can do that: import sys def foobar(): print sys._getframe().f_code.co_name 回答2: One thing you

问题 I'm using pyquery to parse a page: dom = PyQuery('http://zh.wikipedia.org/w/index.php', {'title': 'CSS', 'printable': 'yes', 'variant': 'zh-cn'}) content = dom('#mw-content-text > p').eq(0).text() but what I get in content is a unicode string with utf-8 encoded content: u'\xe5\xb1\x82\xe5\x8f\xa0\xe6\xa0\xb7\xe5\xbc\x8f\xe8\xa1\xa8...' how could I convert it to str without lost the content? to make it clear: I want conent == '\xe5\xb1\x82\xe5\x8f\xa0\xe6\xa0\xb7\xe5\xbc\x8f\xe8\xa1\xa8' not

问题 print "How old are you?", age = raw_input() print "How tall are you in inches?", height = raw_input() print "How much do you weigh in pounds", weight = raw_input() print "So, you are %r years old, %r inches tall, and %d kilograms." % ( age, height, weight / 2.2) So I am new to code and this is my code. When I use terminal to compile it, I get this: How old are you? 1 How tall are you in inches? 1 How much do you weigh in pounds 1 Traceback (most recent call last): File "ex11.py", line 9, in

问题 If I have a function: def run(time, message, time_span_pattern): ... And a list like: run_args = ['1s', '1 second alarm', <_sre.SRE_Pattern object at 0x100435680>] How can I pass the list, as separate arguments, to run? Is there a builtin way to do this, or am I forced to reference each element individually and by index? 回答1: You're looking for: run(*run_args) This is explained in more detail in this StackOverflow answer about the star and double star operator It's also covered in the python

问题 I'm really, really new to Python and was making a small test program. Here is my code: def start (): print ("This is where text would be") prompt_sta () def prompt_sta (): prompt_0=raw_input("Input a Command: ") try: if prompt_0 == 'Okay': next_screen () else: print ('Type Okay.') prompt_sta () when I try to run it I get the "Unexpected EOF while parsing" error. 回答1: For the EOF error, you can just get rid of that try: like so def start (): print ("This is where text would be") prompt_sta ()

问题 Lets say I have this class: class Test(object): def __init__(self, a): self.a = a def test(self, b): if isinstance(self, Test): return self.a + b else: return self + b This would ideally in my world do this: >>> Test.test(1,2) 3 >>> Test(1).test(2) 3 Now this doesn't work because you get this error: TypeError: unbound method test() must be called with Test instance as first argument (got int instance instead) In python3 this works fine, and I have the sneaking suspicion this is possible with

问题 Search failed Traceback (most recent call last): File "/base/data/home/apps/s~montaoproject/2013e.368508855356793432/search_demo.py", line 87, in find_documents return index.search(query) File "/python27_runtime/python27_lib/versions/1/google/appengine/api/search/search.py", line 2732, in search _CheckStatus(response.status()) File "/python27_runtime/python27_lib/versions/1/google/appengine/api/search/search.py", line 413, in _CheckStatus raise _ERROR_MAP[status.code()](status.error_detail())

问题 I have a list of things I'd like to print using a format string. In Python 3-style, using "a string".format(arg,arg,arg) , this is easy. I can just replace with arguments with *mylist , like mylist = [1,2,3] "{} {} {}".format(*mylist) I can't seem to make this work with the older percent-formatting. I've tried stuff like "%i %i %i" % mylist , %i %i %i" % (mylist) , and %i %i %i" % (*mylist) but I just keep getting syntax errors or "not enough arguments". Is this impossible in 2.x style? ETA:

问题 I am using python 2: python --version Python 2.7.13 :: Continuum Analytics, Inc. I have the following project structure: . └── foo ├── bar1 │ ├── __init__.py │ └── mod1.py ├── bar2 │ ├── __init__.py │ └── mod2.py ├── __init__.py └── start.py start.py from foo.bar2.mod2 import mod2_f mod2_f() mod1.py def mod1_f(): print "mod1_f" mod2.py from foo.bar1.mod1 import mod1_f def mod2_f(): mod1_f() print "mod2_f" If I run start.py from an IDE things work ok. However using something like this: python

问题 I am using python 2: python --version Python 2.7.13 :: Continuum Analytics, Inc. I have the following project structure: . └── foo ├── bar1 │ ├── __init__.py │ └── mod1.py ├── bar2 │ ├── __init__.py │ └── mod2.py ├── __init__.py └── start.py start.py from foo.bar2.mod2 import mod2_f mod2_f() mod1.py def mod1_f(): print "mod1_f" mod2.py from foo.bar1.mod1 import mod1_f def mod2_f(): mod1_f() print "mod2_f" If I run start.py from an IDE things work ok. However using something like this: python