0o1154

0o1154 is an octal numeral represented with the prefix 0o, a convention used in several programming languages to indicate octal values. In decimal notation, 0o1154 equals 620, and in hexadecimal it is 0x26C. The digits 1, 1, 5, and 4 are all valid in octal notation (base 8), since octal digits range from 0 to 7.

The 0o prefix is used in Python 3 to distinguish octal literals from decimal and other bases, avoiding ambiguity with numbers that begin with 0. In contrast, older Python versions and some other languages historically used a leading zero without a specific prefix (for example, 01154 in some contexts) to denote octal, which could lead to misinterpretation or errors during maintenance. The explicit 0o form clarifies intent and aligns with modern language design practices for numeric literals.

Beyond programming syntax, octal representations appear in computing contexts that involve bit patterns and permissions. For example, octal values are often used in Unix-like systems to express file permissions, though 0o1154 itself is not a standard permission quartet; it illustrates how octal values translate to binary, decimal, and hexadecimal forms. Understanding the equivalence among bases helps in debugging and low-level data interpretation.

See also: octal numeral system; numeric literals in programming; the Python programming language; Unix file permissions.

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