Dec 19, 2008 · I just want to know how to parse a float string to a float, and (separately) an int string to an int. It's good that you ask to do these separately. If you're mixing them, you may be setting yourself up for problems later. The simple answer is: "545.2222" to float: >>> float("545.2222") 545.2222 "31" to an integer: >>> int("31") 31

float(item) do the right thing: it converts its argument to float and and return it, but it doesn't change argument in-place. A simple fix for your code is: new_list = [] for item in list: new_list.append(float(item)) The same code can written shorter using list comprehension: new_list = [float(i) for i in list] To change list in-place:

Aug 29, 2016 · csv.QUOTE_NONNUMERIC: Instructs the reader to convert all non-quoted fields to type float. That works if you're ok with all unquoted fields (integer, float, text, Boolean etc.) being converted to float, which is generally a bad idea for many reasons (missing or NA values in Booleans or factors will get silently squelched).

Apr 10, 2009 · I've got some Python code that runs through a list of strings and converts them to integers or floating point numbers if possible. Doing this for integers is pretty easy if element.isdigit():

len(repr(float(x)/3)) However I must say that this isn't as reliable as you think. Floats are entered/displayed as decimal numbers, but your computer (in fact, your standard C library) stores them as binary.

May 30, 2017 · NOTE: pd.convert_objects has now been deprecated. You should use pd.Series.astype(float) or pd.to_numeric as described in other answers. This is available in 0.11. Forces conversion (or set's to nan) This will work even when astype will fail; its also series by series so it won't convert say a complete string column

Jul 9, 2011 · How can I convert a string like 123,456.908 to float 123456.908 in Python? For int s, see How to convert a string to a number if it has commas in it as thousands separators? , although the techniques are essentially the same.

The point here it can not convert alphanumeric strings, in some cases if you are scraping data or something like $400, $ symbol is alphanumeric then it consider an string, if you try convert to float it display an error, i give you this example to show it only convert numbers to float, in this case i solved the problem like this data ='$400 ...

I have a function taking float arguments (generally integers or decimals with one significant digit), and I need to output the values in a string with two decimal places (5 → 5.00, 5.5 → 5.50, etc). How can I do this in Python?

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