pandas pass two columns to function

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Flore
30 Apr 2016
1#Method 1:
2df["Delivery Charges"] = df[["Weight", "Package Size", "Delivery Mode"]].apply(
3  lambda x : calculate_rate(*x), axis=1)
4
5#Method 2:
6df["Delivery Charges"] = df.apply(
7  lambda x : calculate_rate(x["Weight"], 
8  x["Package Size"], x["Delivery Mode"]), axis=1)
source
Ennio
17 Jul 2019
1In [49]: df
2Out[49]: 
3          0         1
40  1.000000  0.000000
51 -0.494375  0.570994
62  1.000000  0.000000
73  1.876360 -0.229738
84  1.000000  0.000000
9
10In [50]: def f(x):    
11   ....:  return x[0] + x[1]  
12   ....:  
13
14In [51]: df.apply(f, axis=1) #passes a Series object, row-wise
15Out[51]: 
160    1.000000
171    0.076619
182    1.000000
193    1.646622
204    1.000000
21
source
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