Divide list when there is a shift from int to str

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So I have a list that looks something like [’A’, 1, 3, 6, ’B’, 3, 5, ’C’, 6, 7, 3] how do I divide the list into sublists everytime there is a new string so that I would get [A’, 1, 3, 6] [’B’, 3, 5] [’C’, 6, 7, 3]

You can do this with a simple iterative loop

//original list is called x

x = ['A', '1', '3', '6', 'B', '3', '5', 'C', '6', '7', '3']
finallist = []
newList = []
addtolist = False 
for i in range (len(x)):
    if x[i].isalpha():
        if len(newList) != 0:
            finallist.append(newList)
            newList = []        
    newList.append(x[i])
finallist.append(newList)
print (finallist)

Lists and strings — and other collections that maintain the order of their items The following list contains a string, a float, an integer, and (amazingly) another list​: of the list changes, you won't have to go through the program changing all the or have two separate lists, and cases where there is only one underlying list,  Python | Shift last element to first position in list The cyclic rotations have been discussed in the earlier articles. But sometimes, we just require a specific task, a part of rotation i.e shift last element to first element in list.

given = ['A', 1, 3, 6, 'B', 3, 5, 'C', 6, 7, 3]
result = []
current = []
for element in given:
    if type(element)==str:
        if current!=[]:
            result.append(current)
        current = []
    current.append(element)
result.append(current)
print(result)

prints out:

[['A', 1, 3, 6], ['B', 3, 5], ['C', 6, 7, 3]]

The opposite function is push: push ARRAY, LIST This pushes the values in LIST on to the it and shifting the elements of the array list to the left by one. shift ARRAY shift split function, which enables you to separate a string using a regular expression. For example, to convert all the elements of an array to lowercase:  The answer is that this requires a left shift 16 + S places of a 32 bit integer. By splitting the shift into two as shown and by making use of the C integer promotion rules, the expression becomes: Right shift a 32 bit integer 16 places and convert to a 16 bit integer. This effectively means just use the top half of the 32 bit integer.

Just look for a string character using regex and get all the substrings matching the criteria

import re
a=['A', 1, 3, 6, 'B', 3, 5, 'C', 6, 7, 3] 
l=re.findall('(\w\d{0,})',''.join(list(map(str,a))))
l=list(map(list,l))
for i in l:
    for index,j in enumerate(i):
        if j.isdigit():
            i[index]=int(j) #change type back to int for all the integers
print(l) #[['A', 1, 3, 6], ['B', 3, 5], ['C', 6, 7, 3]]

The >> and << shift operators manipulate integer values as binary numbers values are processed into integer forms prior to evaluation), shifting their bits one to the this multiplies or divides the value by 2, omitting the remainder. print 2 << 1; x, for string variables. x is usually used for strings, but can also replicate lists. Another approach to convert a list of multiple integers into a single integer is to use map () function of Python with str function to convert the Integer list to string list. After this, join them on the empty string and then cast back to integer. # Python3 program to convert a list. # of integers into a single integer. def convert (list):

my_list = [’A’, 1, 3, 6, ’B’, 3, 5, ’C’, 6, 7, 3]
sub_list = []
count = -1

for i in my_list:
    if (isinstance(i, str)):
        count+=1
        l = [i]
        sub_list.append(l)

    else:
        if (count is -1):
            count+=1

        sub_list[count].append(i)

This will give you a list of list separated by 'a string'.

3.4 Practical Techniques for List Splitting For list splitting split(x, t), we propose four Let H = (2τ−1,,2τ−1) be a packed list of N τ-bit integers with only the most d[i] mod2k = 1 is shifted by 2k at step k, based on the idea of monotone routing. If numbers become very large recall that 6=2x3 and that one can divide j by 2** first (=shift 1) before dividing by 3 (mul/shift). That would approx. double the number at which overflow occurs, but it adds an instruction so it will be a little slower but might still be faster (not tested).

You could do this, but there's probably a more Pythonic way to do it:

my_list = ["A", 1, 3, 6, "B", 3, 5, "C", 6, 7, 3]

def is_number(s):
    try:
        float(s)
        return True
    except ValueError:
        return False

def sort_list(input_list):

    parent_list = []
    child_list = [input_list.pop(0)]

    while (len(input_list)):
        first = input_list.pop(0)

        if is_number(first):
            child_list.append(first)
        else: 
            parent_list.append(child_list)
            child_list = list(first)

    parent_list.append(child_list)

    return parent_list

print(sort_list(my_list))

The following list contains a string, a float, an integer, and (mirabile dictu) another list: Finally, there is a special list that contains no elements. of the list changes, you won't have to go through the program changing all the loops; they will work correctly for any size list: The split function breaks a string into a list of words. In this case there is only one delimiter. strtok returns a pointer to the character of next token. So the first time it is called, it will point to the first word. char *ptr = strtok(str, delim); strtok needs to be called several times to split a string ^ ptr points here But there is another thing. strtok modifies the original string.

starting at the most significant bit and moving right to the least significant bit. put it in the string in the location defined by the current bit divided by eight. net.​append(int(addr[i]) & mask[i]) Don't forget, our original address list was still a string. Also, you can round to nearest instead of truncate if you add "half LSB" before the final shift: Yes you can, but that doesn't accurately represent the results you would normally get from integer division. Using that approach results in a far greater number of operand values which yield off-by-one errors, 8211 vs 54.

There are three distinct numeric types: integers, floating point numbers, and complex numbers. This table lists the bitwise operations sorted in ascending priority: A right shift by n bits is equivalent to division by pow(2, n) without overflow check. Class method to return the float represented by a hexadecimal string s. Similar to the built-in str() method, Python also offers the handy int() method that takes a string object as an argument and returns an integer. Example Usage: # Here age is a string object age = "18" print(age) # Converting a string to an integer int_age = int(age) print(int_age) Output: 18 18 Although the output is visually similar, keep in mind that the first line is a string object while

Objects of different types, except different numeric types and different string types, never There are four distinct numeric types: plain integers, long integers, floating point A right shift by n bits is equivalent to division by pow(2, n) . There are seven sequence types: strings, Unicode strings, lists, tuples, bytearrays​, buffers  Any single or multiple element data structure, or list-like object. axis {0 or ‘index’, 1 or ‘columns’} Whether to compare by the index (0 or ‘index’) or columns (1 or ‘columns’). For Series input, axis to match Series index on. level int or label. Broadcast across a level, matching Index values on the passed MultiIndex level.

Comments
  • What should happen if there are no characters in list.
  • dict(map(lambda x:(x[0],list(map(int,x[1]))),re.findall("([a-zA-Z])(\d+)","".join(map(str,data)))))