fileinput.filelineno()
fileinput.filelineno() is a Python function in the Fileinput Module category. Returns the line number in the current file (1-based). The syntax is fileinput.filelineno(). Returns: Integer line number. A typical example: if fileinput.filelineno() == 1: print("First line!"). A close sibling is fileinput.input(), which iterates over lines from multiple input files (like awk). A close sibling is fileinput.filename(), which returns the current file name being processed. A close sibling is fileinput.lineno(), which returns the cumulative line number across all files. A close sibling is fileinput.isfirstline(), which returns True if the line is the first line of its file. More about this category: File input helper — input, filename, filelineno, nextfile. Related Fileinput Module entries: fileinput.input(), fileinput.filename(), fileinput.lineno(), fileinput.isfirstline(), fileinput.nextfile(). This page is part of the free Python Reference documentation covering 978+ functions, methods, and modules with examples and parameter details. You can try fileinput.filelineno() immediately in the Python playground, look up unfamiliar terms in the glossary, or return to the Python Reference homepage.