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  2. Python | Build a list of alignment strings for a range N

Python | Build a list of alignment strings for a range N

Method # 1: Using List Comprehension + zfill()
A combination of the above functions can be used to accomplish this task. In this we perform the task of adding numbers using a list comprehension, and zfill () takes care of the length required for each line.

# Python3 code to demonstrate how it works
# Construct N Range Equilength String list
# using a list comprehension + zfill ()

 
# initialize N

N = 6

  
# print N

print ( " Number of elements required: " + str (N))

  
# initialize K

K = 3

 
# Construct N Range Equilength String list
# using a list comprehension + zfill ()

res = [ str (ele) .zfill (K) for ele in range (N)]

 
# print result

print ( "K Length range strings list:" + str (res))

Output: 

 Number of elements required: 6 K Length range strings list: [`000`,` 001`, `002`,` 003`, `004`, `005`]

Method # 2: Using map () + string formatting
This task can also be done using the above functions. In this, we extend the length logic using string formatting. And it is used to plot the N range.

# Python3 code to demonstrate how it works
# Construct N Range Equilength String list
# using map () + string formatting

 
# initialize N

N = 6

 
# print N

print ( "Number of elements required: " + str (N))

 
# initialize K  

K = 3

 
# Construct N Range Equilength String list
# using map () + string formatting

temp = `{: 0` + str (K) + `}`

res = list ( map (temp. format , range (N)))

  
# print result

print ( "K Length range strings list:" + str (res))

Output: 

 Number of elements required: 6 K Length range strings list: [` 000`, `001`,` 002`, `003`,` 004`, `005`]