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Python
Python
Python is a high-level, interpreted programming language known for its simplicity and readability.
Modules
os.path
os.path.join("uploads/", "flag.txt") # uploads/flag.txt
os.path.join("uploads/", "/flag.txt") # /flag.txt
os.path.join("uploads/", "../flag.txt") # uploads/../flag.txtre
| Function | Description |
|---|---|
| re.match() | checks for a match only at the beginning of the string |
| re.search() | checks for a match anywhere in the string |
| re.fullmatch() | checks for entire string to be a match |
>>> re.match(r"\.", "../../../../etc/passwd") # match!
<re.Match object; span=(0, 1), match='.'>
>>> re.match(r"\.", "/../../../../etc/passwd") # no match!Testing Python regex:
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