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how to add items in list in python at specific position

# Python3 program for Insertion in a list  
# before any element using insert() method 
  
list1 = [ 1, 2, 3, 4, 5, 6 ]
  
# Element to be inserted 
element = 13 
  
# Element to be inserted before 3
beforeElement = 3 
  
# Find index
index = list1.index(beforeElement) 
  
# Insert element at beforeElement 
list1.insert(index, element) 
print(list1)

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