String

The following methods are available under the expr.str attribute.

Expr.str.concat([delimiter, ignore_nulls])	Vertically concatenate the string values in the column to a single string value.
Expr.str.contains(pattern, *[, literal, strict])	Check if string contains a substring that matches a pattern.
Expr.str.contains_any(patterns, *[, ...])	Use the aho-corasick algorithm to find matches.
Expr.str.count_matches(pattern, *[, literal])	Count all successive non-overlapping regex matches.
Expr.str.decode(encoding, *[, strict])	Decode values using the provided encoding.
Expr.str.encode(encoding)	Encode values using the provided encoding.
Expr.str.ends_with(suffix)	Check if string values end with a substring.
Expr.str.explode()	Returns a column with a separate row for every string character.
Expr.str.extract(pattern[, group_index])	Extract the target capture group from provided patterns.
Expr.str.extract_all(pattern)	Extract all matches for the given regex pattern.
Expr.str.extract_groups(pattern)	Extract all capture groups for the given regex pattern.
Expr.str.find(pattern, *[, literal, strict])	Return the index position of the first substring matching a pattern.
Expr.str.head(n)	Return the first n characters of each string in a String Series.
Expr.str.json_decode([dtype, ...])	Parse string values as JSON.
Expr.str.json_path_match(json_path)	Extract the first match of JSON string with the provided JSONPath expression.
Expr.str.len_bytes()	Return the length of each string as the number of bytes.
Expr.str.len_chars()	Return the length of each string as the number of characters.
Expr.str.pad_end(length[, fill_char])	Pad the end of the string until it reaches the given length.
Expr.str.pad_start(length[, fill_char])	Pad the start of the string until it reaches the given length.
Expr.str.replace(pattern, value, *[, literal, n])	Replace first matching regex/literal substring with a new string value.
Expr.str.replace_all(pattern, value, *[, ...])	Replace all matching regex/literal substrings with a new string value.
Expr.str.replace_many(patterns, replace_with, *)	Use the aho-corasick algorithm to replace many matches.
Expr.str.reverse()	Returns string values in reversed order.
Expr.str.slice(offset[, length])	Extract a substring from each string value.
Expr.str.split(by, *[, inclusive])	Split the string by a substring.
Expr.str.split_exact(by, n, *[, inclusive])	Split the string by a substring using n splits.
Expr.str.splitn(by, n)	Split the string by a substring, restricted to returning at most n items.
Expr.str.starts_with(prefix)	Check if string values start with a substring.
Expr.str.strip_chars([characters])	Remove leading and trailing characters.
Expr.str.strip_chars_start([characters])	Remove leading characters.
Expr.str.strip_chars_end([characters])	Remove trailing characters.
Expr.str.strip_prefix(prefix)	Remove prefix.
Expr.str.strip_suffix(suffix)	Remove suffix.
Expr.str.strptime(dtype[, format, strict, ...])	Convert a String column into a Date/Datetime/Time column.
Expr.str.tail(n)	Return the last n characters of each string in a String Series.
Expr.str.to_date([format, strict, exact, cache])	Convert a String column into a Date column.
Expr.str.to_datetime([format, time_unit, ...])	Convert a String column into a Datetime column.
Expr.str.to_decimal([inference_length])	Convert a String column into a Decimal column.
Expr.str.to_integer(*[, base, strict])	Convert a String column into an Int64 column with base radix.
Expr.str.to_lowercase()	Transform to lowercase variant.
Expr.str.to_titlecase()	Transform to titlecase variant.
Expr.str.to_time([format, strict, cache])	Convert a String column into a Time column.
Expr.str.to_uppercase()	Transform to uppercase variant.
Expr.str.zfill(length)	Pad the start of the string with zeros until it reaches the given length.