Removing apostrophes in list
Question:
how to remove apostrophes in list like below:
x = [['3.937', '1.968', '1.968'], ['3.937', '1.968', '1.968'], ['3.937', '1.968', '1.968'], ['7.874', '3.937', '1.968'], ['7.874', '3.937', '1.968'], ['7.874', '3.937', '1.968'], ['7.874', '3.937', '1.968'], ['7.874', '3.937', '1.968'], ['7.874', '3.937', '1.968']]
All in all i want to convert this thing to like this:
x = [(3.937,1.968,1.968),(3.937,1.968,1.968)]
result = int(my_list[0])
but there is errors like :
result = int(x[0])
Traceback (most recent call last):
result = int(x[0])
TypeError: int() argument must be a string, a bytes-like object or a real number, not 'list'
Answers:
This is a nested list. If you use int(x[0]) you are accessing the first sublist: ['3.937','1.968','1.968'] which can’t be transformed via int(), therefore you need to use a nested list-comprehension approach:
result = [[float(value) for value in sublist] for sublist in x]
If you’d like to have tuples instead of nested-list, you can use:
result = [tuple([float(value) for value in sublist]) for sublist in x]
You can use list comprehensions with map on every sub list
x = [list(map(float, y)) for y in x]
The apostrophes show that the values are strings. Each string seems to be a representation of a float. Therefore:
x = [['3.937', '1.968', '1.968'], ['3.937', '1.968', '1.968'], ['3.937', '1.968', '1.968'], ['7.874', '3.937', '1.968'], ['7.874', '3.937', '1.968'], ['7.874', '3.937', '1.968'], ['7.874', '3.937', '1.968'], ['7.874', '3.937', '1.968'], ['7.874', '3.937', '1.968']]
x = [tuple(map(float, e)) for e in x]
print(x)
Output:
[(3.937, 1.968, 1.968), (3.937, 1.968, 1.968), (3.937, 1.968, 1.968), (7.874, 3.937, 1.968), (7.874, 3.937, 1.968), (7.874, 3.937, 1.968), (7.874, 3.937, 1.968), (7.874, 3.937, 1.968), (7.874, 3.937, 1.968)]
how to remove apostrophes in list like below:
x = [['3.937', '1.968', '1.968'], ['3.937', '1.968', '1.968'], ['3.937', '1.968', '1.968'], ['7.874', '3.937', '1.968'], ['7.874', '3.937', '1.968'], ['7.874', '3.937', '1.968'], ['7.874', '3.937', '1.968'], ['7.874', '3.937', '1.968'], ['7.874', '3.937', '1.968']]
All in all i want to convert this thing to like this:
x = [(3.937,1.968,1.968),(3.937,1.968,1.968)]
result = int(my_list[0])
but there is errors like :
result = int(x[0])
Traceback (most recent call last):
result = int(x[0])
TypeError: int() argument must be a string, a bytes-like object or a real number, not 'list'
This is a nested list. If you use int(x[0]) you are accessing the first sublist: ['3.937','1.968','1.968'] which can’t be transformed via int(), therefore you need to use a nested list-comprehension approach:
result = [[float(value) for value in sublist] for sublist in x]
If you’d like to have tuples instead of nested-list, you can use:
result = [tuple([float(value) for value in sublist]) for sublist in x]
You can use list comprehensions with map on every sub list
x = [list(map(float, y)) for y in x]
The apostrophes show that the values are strings. Each string seems to be a representation of a float. Therefore:
x = [['3.937', '1.968', '1.968'], ['3.937', '1.968', '1.968'], ['3.937', '1.968', '1.968'], ['7.874', '3.937', '1.968'], ['7.874', '3.937', '1.968'], ['7.874', '3.937', '1.968'], ['7.874', '3.937', '1.968'], ['7.874', '3.937', '1.968'], ['7.874', '3.937', '1.968']]
x = [tuple(map(float, e)) for e in x]
print(x)
Output:
[(3.937, 1.968, 1.968), (3.937, 1.968, 1.968), (3.937, 1.968, 1.968), (7.874, 3.937, 1.968), (7.874, 3.937, 1.968), (7.874, 3.937, 1.968), (7.874, 3.937, 1.968), (7.874, 3.937, 1.968), (7.874, 3.937, 1.968)]