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String operations
The numpy.char
module provides a set of vectorized string operations for arrays of type numpy.str_
or numpy.bytes_
. All of them are based on the string methods in the Python standard library.
String operations
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Return element-wise string concatenation for two arrays of str or unicode. |
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Return (a * i), that is string multiple concatenation, element-wise. |
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Return (a % i), that is pre-Python 2.6 string formatting (interpolation), element-wise for a pair of array_likes of str or unicode. |
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Return a copy of |
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Return a copy of |
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Calls |
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Calls |
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Return a copy of each string element where all tab characters are replaced by one or more spaces. |
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Return a string which is the concatenation of the strings in the sequence |
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Return an array with the elements of |
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Return an array with the elements converted to lowercase. |
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For each element in |
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Partition each element in |
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For each element in |
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Return an array with the elements of |
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Partition (split) each element around the right-most separator. |
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For each element in |
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For each element in |
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For each element in |
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For each element in |
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For each element in |
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Return element-wise a copy of the string with uppercase characters converted to lowercase and vice versa. |
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Return element-wise title cased version of string or unicode. |
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For each element in |
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Return an array with the elements converted to uppercase. |
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Return the numeric string left-filled with zeros |
Comparison
Unlike the standard numpy comparison operators, the ones in the char
module strip trailing whitespace characters before performing the comparison.
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Return (x1 == x2) element-wise. |
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Return (x1 != x2) element-wise. |
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Return (x1 >= x2) element-wise. |
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Return (x1 <= x2) element-wise. |
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Return (x1 > x2) element-wise. |
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Return (x1 < x2) element-wise. |
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Performs element-wise comparison of two string arrays using the comparison operator specified by |
String information
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Returns an array with the number of non-overlapping occurrences of substring |
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Returns a boolean array which is |
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For each element, return the lowest index in the string where substring |
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Like |
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Returns true for each element if all characters in the string are alphabetic and there is at least one character, false otherwise. |
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Returns true for each element if all characters in the string are alphanumeric and there is at least one character, false otherwise. |
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For each element, return True if there are only decimal characters in the element. |
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Returns true for each element if all characters in the string are digits and there is at least one character, false otherwise. |
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Returns true for each element if all cased characters in the string are lowercase and there is at least one cased character, false otherwise. |
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For each element, return True if there are only numeric characters in the element. |
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Returns true for each element if there are only whitespace characters in the string and there is at least one character, false otherwise. |
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Returns true for each element if the element is a titlecased string and there is at least one character, false otherwise. |
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Returns true for each element if all cased characters in the string are uppercase and there is at least one character, false otherwise. |
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For each element in |
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Like |
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Returns a boolean array which is |
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Return len(a) element-wise. |
Convenience class
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Licensed under the 3-clause BSD License.
https://numpy.org/doc/1.23/reference/routines.char.html