5 examples of 'get index of element in array python' in Python

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62def find_index(self, e):
63 for i in range(self._size):
64 if self._data[i] == e:
65 return i
66 return -1
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4def find(arr, elem):
5 lo = 0
6 hi = len(arr) - 1
7 while lo < hi:
8 mid = (hi + lo) // 2
9 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 = mid
19 else:
20 lo = mid + 1
21
22 if arr[lo] == elem:
23 return lo
24 return None
17def at_i(array, i=0):
18 return [a[i] for a in array]
220def getInd(value, array):
221 """Return closest index (rounded down) of a value from sorted array."""
222 ind = np.abs(array-value).argmin()
223 return int(ind)
563def descr_getitem(self, space, w_idx):
564 "x.__getitem__(y) <==> x[y]"
565 if not space.isinstance_w(w_idx, space.w_slice):
566 idx, stop, step = space.decode_index(w_idx, self.len)
567 assert step == 0
568 return self.w_getitem(space, idx)
569 else:
570 return self.getitem_slice(space, w_idx)

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