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How to multiply lists in Python 3.x
📁 List, Advanced Python Topics
There is a text file with the following content ""D11i14V17A8n7R11H16r18P18E5h18i18x8O16Y5s13d1X6u4a20C2p2O14J5I11L5K6y4X19n10s17h1E17Q5Z1U1K6U8E8L11n14k6"". I wrote code that splits letter values into one list and numeric values into another. How to correctly multiply the data from the list so that the final result is D * 11 = DDDDDDDDDDD (Letter D 11 times). Code below:
import rec = []d = []result = 0with open('dest.txt', 'r') as s: for line in s: line = line.strip() lst = re.split('(\\d*)' For this construct:
for i in my_list: i*=5Python creates a new variable i into which the values from the list are sequentially placed. As a result, you are changing the value of the variable i, the list remains unchanged.
In [136]: my_list=[1,2,3,4,5,6] ...: for i in my_list: ...: i*=5 ...: print(i, my_list) ...:5 Log in to leave an answer
