String tests & padding in Python

Inspecting and aligning text with str predicates.

token = "Room101"

is_alnum = token.isalnum()
has_digit = any(c.isdigit() for c in token)
all_upper = token.isupper()

code = "  42 "
clean = code.strip()
numeric = clean.isdigit()
value = int(clean) if numeric else 0

folded = "STRASSE".casefold()
padded = token.rjust(10, ".")

How it works

1. isalnum, isdigit, isupper classify content.
2. strip then isdigit guards an int conversion.
3. casefold and rjust normalize and pad.

Keywords and builtins used here

• any
• else
• for
• if
• int

The run, in numbers

Lines

13

Characters to type

278

Tokens

83

Three-star pace

90 tpm

At the three-star pace of 90 tokens a minute, this run takes about 55 seconds.

Type this snippet

Step 5 of 9 in Strings, step 11 of 72 in Language basics.

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