string_like_methods.md

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String-like Methods (on string var)

This page documents all user-facing string methods available on var objects holding strings, in a clear tabular format with concise examples.

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String Methods

Method	Description	Example
upper()	Uppercase	var("abc").upper() // "ABC"
lower()	Lowercase	var("ABC").lower() // "abc"
strip()	Strip whitespace	var(" hi ").strip() // "hi"
lstrip()	Strip left	var(" hi").lstrip() // "hi"
rstrip()	Strip right	var("hi ").rstrip() // "hi"
replace(old, new)	Replace substring	var("aabb").replace("a","b") // "bbbb"
find(substr)	Find substring index	var("abc").find("b") // 1
startswith(prefix)	Starts with prefix	var("abc").startswith("a") // true
endswith(suffix)	Ends with suffix	var("abc").endswith("c") // true
isdigit()	Is all digits	var("123").isdigit() // true
isalpha()	Is all alpha	var("abc").isalpha() // true
isalnum()	Is alphanumeric	var("a1b2").isalnum() // true
isspace()	Is all whitespace	var(" ").isspace() // true
capitalize()	Capitalize first letter	var("abc").capitalize() // "Abc"
sentence_case()	Capitalize first letter, rest lower	var("hELLO.worLd").sentence_case() // "Hello.World"
title()	Title case	var("hi there").title() // "Hi There"
count(substr)	Count substring occurrences	var("aaba").count("a") // 3
reverse()	Reverse string	var("abc").reverse() // "cba"
split(delim = " ")	Split by delimiter	var("a b").split() // ["a","b"]
join(list)	Join list with string as separator	var(",").join(list("a","b")) // "a,b"
center(width, fillchar = " ")	Center string	var("hi").center(5,"-") // "-hi--"
zfill(width)	Pad with zeros on left	var("7").zfill(3) // "007"

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Examples

#include <pythonic/pythonic.hpp>
using namespace py;

int main()
{
var s = "  hello pythonic  ";
print(s);                   // "  hello pythonic  "
print(s.strip());           // "hello pythonic"
print(s.lstrip());          // "hello pythonic  "
print(s.rstrip());          // "  hello pythonic"
print(s.upper());           // "  HELLO pythonic  "
print(s.lower());           // "  hello pythonic  "
print(s.replace(" ", "_")); // "__hello_pythonic__"
print(s.find("pythonic"));    // 8
print(s.startswith("  h")); // true
print(s.endswith("d  "));   // true
print(var("123").isdigit()); // true
print(var("abc").isalpha()); // true
print(var("a1b2").isalnum()); // true
print(var("   ").isspace()); // true
print(var("abc").capitalize()); // "Abc"
print(var("hELLO.i aM PrItHu.").sentence_case()); // "Hello. I am Prithu."
print(var("hi there").title()); // "Hi There"
print(var("aaba").count("a")); // 3
print(var("abc").reverse()); // "cba"
print(var("a b c").split()); // ["a","b","c"]
print(var(",").join(list("a","b","c"))); // "a,b,c"
print(var("hi").center(5,"-")); // "-hi--"
print(var("7").zfill(3)); // "007"
    return 0;
}

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Notes

• All methods return a new var (string or list) and do not modify the original.
• Use split/join for conversion between strings and lists.
• Most methods match Python string semantics.

Next check

• Numeric / Arithmetic