Python | Min/Max value in float string list

Sometimes, while working with a Python list, we can have a problem in which we need to find min/max value in the list. But sometimes, we don’t have a natural number but a floating-point number in string format. This problem can occur while working with data, both in web development and Data Science domain. Let’s discuss a way in which this problem can be solved.

Method : Using min()/max() + float()
This problem can be solved using the min or max function in which we first convert the strings into float and then pass this logic in functions in respective min/max function.

# Python3 code to demonstrate working of 
# Min / Max value in float string list 
# using min()/max() + float() + generator 
  
# initialize lists 
test_list = ['4.5', '7.8', '9.8', '10.3'] 
  
# printing original list 
print("The original list is : " + str(test_list)) 
  
# Min / Max value in float string list 
# using min()/max() + float() + generator 
res_min = min(float(sub) for sub in test_list) 
res_max = max(float(sub) for sub in test_list) 
  
# printing result 
print("The min value of list : " + str(res_min)) 
print("The max value of list : " + str(res_max)) 

Output :

The original list is : ['4.5', '7.8', '9.8', '10.3']
The min value of list : 4.5
The max value of list : 10.3

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