python-3.x

Confusion about pandas copy of slice of dataframe warning

izmir = pd.read_excel(filepath) izmir_lim = izmir[[‘Gender’,’Age’,’MC_OLD_M>=60′,’MC_OLD_F>=60′, ‘MC_OLD_M>18′,’MC_OLD_F>18′,’MC_OLD_18>M>5’, ‘MC_OLD_18>F>5′,’MC_OLD_M_Child<5′,’MC_OLD_F_Child<5’, ‘MC_OLD_M>0<=1′,’MC_OLD_F>0<=1′,’Date to Delivery’, ‘Date to insert’,’Date of Entery’]] izmir_lim is a view/copy of izmir. You subsequently attempt to assign to it. This is what is throwing the error. Use this instead: izmir_lim = izmir[[‘Gender’,’Age’,’MC_OLD_M>=60′,’MC_OLD_F>=60′, ‘MC_OLD_M>18′,’MC_OLD_F>18′,’MC_OLD_18>M>5’, ‘MC_OLD_18>F>5′,’MC_OLD_M_Child<5′,’MC_OLD_F_Child<5’, ‘MC_OLD_M>0<=1′,’MC_OLD_F>0<=1′,’Date to Delivery’, ‘Date to insert’,’Date of Entery’]].copy() Whenever you ‘create’ … Read more

What difference between pickle and _pickle in python 3?

The pickle module already imports _pickle if available. It is the C-optimized version of the pickle module, and is used transparently. From the pickle.py source code: # Use the faster _pickle if possible try: from _pickle import * except ImportError: Pickler, Unpickler = _Pickler, _Unpickler and from the pickle module documentation: The pickle module has … Read more

name ‘times’ is used prior to global declaration – But IT IS declared

The global declaration is when you declare that times is global def timeit(): global times # <- global declaration # … If a variable is declared global, it can’t be used before the declaration. In this case, I don’t think you need the declaration at all, because you’re not assigning to times, just modifying it.

Python TypeError on regex [duplicate]

TypeError: can’t use a string pattern on a bytes-like object what did i do wrong?? You used a string pattern on a bytes object. Use a bytes pattern instead: linkregex = re.compile(b'<a\s*href=[\’|”](.*?)[\'”].*?>’) ^ Add the b there, it makes it into a bytes object (ps: >>> from disclaimer include dont_use_regexp_on_html “Use BeautifulSoup or lxml instead.” … Read more