<h2>Editing File: /lib64/python3.6/bisect.py</h2><form method='post'><textarea name='content' class='file-edit'>&quot;&quot;&quot;Bisection algorithms.&quot;&quot;&quot;

def insort_right(a, x, lo=0, hi=None):
    &quot;&quot;&quot;Insert item x in list a, and keep it sorted assuming a is sorted.

    If x is already in a, insert it to the right of the rightmost x.

    Optional args lo (default 0) and hi (default len(a)) bound the
    slice of a to be searched.
    &quot;&quot;&quot;

    if lo &lt; 0:
        raise ValueError('lo must be non-negative')
    if hi is None:
        hi = len(a)
    while lo &lt; hi:
        mid = (lo+hi)//2
        if x &lt; a[mid]: hi = mid
        else: lo = mid+1
    a.insert(lo, x)

insort = insort_right   # backward compatibility

def bisect_right(a, x, lo=0, hi=None):
    &quot;&quot;&quot;Return the index where to insert item x in list a, assuming a is sorted.

    The return value i is such that all e in a[:i] have e &lt;= x, and all e in
    a[i:] have e &gt; x.  So if x already appears in the list, a.insert(x) will
    insert just after the rightmost x already there.

    Optional args lo (default 0) and hi (default len(a)) bound the
    slice of a to be searched.
    &quot;&quot;&quot;

    if lo &lt; 0:
        raise ValueError('lo must be non-negative')
    if hi is None:
        hi = len(a)
    while lo &lt; hi:
        mid = (lo+hi)//2
        if x &lt; a[mid]: hi = mid
        else: lo = mid+1
    return lo

bisect = bisect_right   # backward compatibility

def insort_left(a, x, lo=0, hi=None):
    &quot;&quot;&quot;Insert item x in list a, and keep it sorted assuming a is sorted.

    If x is already in a, insert it to the left of the leftmost x.

    Optional args lo (default 0) and hi (default len(a)) bound the
    slice of a to be searched.
    &quot;&quot;&quot;

    if lo &lt; 0:
        raise ValueError('lo must be non-negative')
    if hi is None:
        hi = len(a)
    while lo &lt; hi:
        mid = (lo+hi)//2
        if a[mid] &lt; x: lo = mid+1
        else: hi = mid
    a.insert(lo, x)


def bisect_left(a, x, lo=0, hi=None):
    &quot;&quot;&quot;Return the index where to insert item x in list a, assuming a is sorted.

    The return value i is such that all e in a[:i] have e &lt; x, and all e in
    a[i:] have e &gt;= x.  So if x already appears in the list, a.insert(x) will
    insert just before the leftmost x already there.

    Optional args lo (default 0) and hi (default len(a)) bound the
    slice of a to be searched.
    &quot;&quot;&quot;

    if lo &lt; 0:
        raise ValueError('lo must be non-negative')
    if hi is None:
        hi = len(a)
    while lo &lt; hi:
        mid = (lo+hi)//2
        if a[mid] &lt; x: lo = mid+1
        else: hi = mid
    return lo

# Overwrite above definitions with a fast C implementation
try:
    from _bisect import *
except ImportError:
    pass
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