python,string,for-loop , Create a new loop without quotation marks


Create a new loop without quotation marks

Question:

Tag: python,string,for-loop

I wrote a function on python that should print the sentences below.

def write_to_file(matrix, path): 
    f = open(path, "w")
    f.write('\r\n')
    for i in range (2,5):
      item = (bestQuarterRate(matrix, i)) 
      item = (str(item))
      print item
      f.write(item)
    f.close()

The problem is that I get this:

('Highest quarter rate is between', '1/1/15', 'and', '1/3/15', 'with rate:', 924.9966666666666)
('Highest quarter average exchange change is between', '1/4/15', 'and', '1/6/15', 'with rate:', 598.1673333333333)
('Highest quarter volume is between', '1/4/13', 'and', '1/6/13', 'with rate:', 158.7078934137758)

and I need to change it to this:

Highest quarter rate is between 1/1/15 and 1/3/15 with rate: 924.996666667

Highest quarter average exchange is between 1/10/14 and 1/12/14 with rate: 1503.67333333

Highest quarter volume change rate is between 1/4/13 and 1/6/13 with rate: 158.707893414

The best year is 2014 with an average exchange value of: $1601932.83452

I would like to get any help.


Answer:

Your item is a tuple:

>>> item = ('Highest quarter rate is between', '1/1/15', 'and', '1/3/15', 'with rate:', 924.9966666666666)

The string version of a tuple is its representation, for example:

>>> str(item)
"('Highest quarter rate is between', '1/1/15', 'and', '1/3/15', 'with rate:', 924.9966666666666)"

Instead, you want to convert each element in the tuple to a string, then join all of these strings together into a single string:

>>> ' '.join(map(str, item))
'Highest quarter rate is between 1/1/15 and 1/3/15 with rate: 924.996666667'

For further explanation, see the documentation on map, str and str.join.


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