# 10 examples of 'find all index of element in list python' in Python

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``59def list_find(l, element):60    for i, e in enumerate(l):61        if e == element:62            return i63    return None``
``62def find_index(self, e):63    for i in range(self._size):64        if self._data[i] == e:65            return i66    return -1``
``4def find(arr, elem):5    lo = 06    hi = len(arr) - 17    while lo < hi:8        mid = (hi + lo) // 29        first = arr[lo]10        middle = arr[mid]11        last = arr[hi]12        13        if first <= middle and elem >= first and elem <= middle:14            return binary_search(arr, elem, lo, mid)15        elif last >= middle and elem >= middle and elem <= last:16            return binary_search(arr, elem, mid+1, hi)17        elif elem >= first and elem <= middle:18            hi = mid19        else:20            lo = mid + 12122    if arr[lo] == elem:23        return lo24    return None``
``26@register.simple_tag27def find_element(list, index, index2=1):28    """29        When you have list like: a = [(0, 10), (1, 20), (2, 30)] and you need to get value from tuple with first value == index30        Usage:31        {% find_element 1 %} will return 2032    """33    for x in list:34        if x[0] == index:35            return x[index2]36    return None``
``51def posMin(list):52    """ returns the index of the lowest value of a given list53        if multiple highest values exist, the first is returned54    """55    m = list[0]56    index = 057    for i, x in enumerate(list):58        if x < m:59            m = x60            index = i61    return index``
``45def find_index(xs, x):46    return xs.index(x) - len(xs)``
``27def rindex(lst, item):28    try:29        return dropwhile(lambda x: lst[x] != item, reversed(xrange(len(lst)))).next()30    except StopIteration:31        raise ValueError, "rindex(lst, item): item not in list"``
``27def _count(elem: object, ls, index: int) -> int:28    if index < len(ls):29        if ls[index] == elem:30            return 1 + _count(elem, ls, index + 1)31        else:32            return _count(elem, ls, index + 1)33    return 0``
``1def seq_search(items, key):2    """顺序查找"""3    for index, item in enumerate(items):4        if item == key:5            return index6    return -1``
``178def t_list(tokens, index):179    if (t_address_or_t_binary_number(tokens, index)180            and t_separator(tokens, index + 1)):181        islist = 1182        arg = 0183        while islist:184            islist = islist and t_separator(tokens, index + (arg * 2) + 1)185            var_index = index + (arg * 2) + 2186            islist = islist and t_address_or_t_binary_number(tokens, var_index)187            if (t_endline(tokens, index + (arg * 2) + 3)188                    or (index + (arg * 2) + 3) == len(tokens)):189                break190            arg += 1191        if islist:192            return ((arg + 1) * 2) + 1193    return 0``