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Python | Convert Joint Float string to Numbers

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  • Last Updated : 18 Aug, 2021
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Sometimes, while working with Legacy languages, we can have certain problems. One such can be working with FORTRAN which can give text output (without spaces, which are required) ‘12.4567.23’ . In this, there are actually two floating point separate numbers but concatenated. We can have problem in which we need to separate them. Lets discuss certain ways in which this task can be performed.
Method #1 : Using loop + float() 
This is brute force method in which this task can be performed. In this, we iterate for each element and break in chunks of 4 and skip to every 5th element and perform split and store in list. The conversation from string to float is done using float().
 

Python3




# Python3 code to demonstrate working of
# Convert Joint Float string to Numbers
# Using loop + float()
 
# initializing string
test_str = "45.6778.4524.45"
 
# printing original string
print("The original string is : " + test_str)
 
# Convert Joint Float string to Numbers
# Using loop + float()
res = []
for idx in range(0, len(test_str), 5):
    res.append(float(test_str[idx : idx + 5]))
 
# printing result
print("The float list is : " + str(res))

Output : 

The original string is : 45.6778.4524.45
The float list is : [45.67, 78.45, 24.45]

 

 
Method #2 : Using list comprehension + float() 
This is shorthand way to solve this problem. This is similar to above function. The difference is that we perform all loop task in single line using list comprehension.
 

Python3




# Python3 code to demonstrate working of
# Convert Joint Float string to Numbers
# Using list comprehension + float()
 
# initializing string
test_str = "45.6778.4524.45"
 
# printing original string
print("The original string is : " + test_str)
 
# Convert Joint Float string to Numbers
# Using list comprehension + float()
res = [float(test_str[idx : idx + 5]) for idx in range(0, len(test_str), 5)]
 
# printing result
print("The float list is : " + str(res))

Output : 

The original string is : 45.6778.4524.45
The float list is : [45.67, 78.45, 24.45]

 


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