Way to pass multiple parameters to a function in python
Solution 1
test function:
You can use multiple arguments represented by *args
and multiple keywords represented by **kwargs
and passing to a function:
def test(*args, **kwargs):
print('arguments are:')
for i in args:
print(i)
print('\nkeywords are:')
for j in kwargs:
print(j)
Example:
Then use any type of data as arguments and as many parameters as keywords for the function. The function will automatically detect them and separate them to arguments and keywords:
a1 = "Bob" #string
a2 = [1,2,3] #list
a3 = {'a': 222, #dictionary
'b': 333,
'c': 444}
test(a1, a2, a3, param1=True, param2=12, param3=None)
Output:
arguments are:
Bob
[1, 2, 3]
{'a': 222, 'c': 444, 'b': 333}
keywords are:
param3
param2
param1
Solution 2
You can change it to:
def WorkDetails(link, details):
Then invoke it as:
details = [ AllcurrValFound_bse, AllyearlyHLFound_bse,
AlldaysHLFound_bse, AllvolumeFound_bse,
AllprevCloseFound_bse, AllchangePercentFound_bse,
AllmarketCapFound_bse ]
workDetails(link, details)
And you would get the different values out of details by:
AllcurrValFound_bse = details[0]
AllyearlyHLFound_bse = details[1]
...
It would be more robust to turn details
into a dictionary, with the variable names as keys, so take your pick between a few more lines of code vs. defensive programming =p
Solution 3
I think that usage of **kwarg is better. Look this example:
def MyFunc(**kwargs):
print kwargs
MyFunc(par1=[1],par2=[2],par3=[1,2,3])
Comments
-
Invictus almost 2 years
I have written a python script which calls a function. This function takes 7 list as parameters inside the function, something like this:
def WorkDetails(link, AllcurrValFound_bse, AllyearlyHLFound_bse, AlldaysHLFound_bse, AllvolumeFound_bse, AllprevCloseFound_bse, AllchangePercentFound_bse, AllmarketCapFound_bse):
where all the arguments except
link
are lists. But this makes my code looks pretty ugly. I pass these lists to this function because the function appends few values in all of these lists. How can I do it in more readable way for other users?