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3 \!X@sbdZddlZddlZddlZddlZddlZddlZyddlmZ Wn e k rdddl mZ YnXej d5kr~ddl mZndZddlZddlmZmZmZmZddd hZeed rejejejejd6ZeZd8ddZGdddZGdddZy ejZWn(e k r.Gddde!e"ZYnXGdddej#dZ$ej$j%e$Gddde$Z&ej&j%e&ddl'm(Z(e&j%e(Gddde$Z)ej)j%e)Gdd d e)Z*Gd!d"d"e)Z+Gd#d$d$e*Z,Gd%d&d&e*Z-Gd'd(d(e)Z.Gd)d*d*e-e,Z/Gd+d,d,e&Z(Gd-d.d.e$Z0ej0j%e0Gd/d0d0ej1Z2Gd1d2d2e0Z3Gd3d4d4e3Z4dS)9z) Python implementation of the io module. N) allocate_lockwin32cygwin)setmode)__all__SEEK_SETSEEK_CURSEEK_END SEEK_HOLEirTcCs~t|tstj|}t|tttfs0td|t|tsFtd|t|ts\td||dk r|t|t r|td||dk rt|t rtd|t|}|tdst|t|krt d|d|k} d |k} d |k} d |k} d |k} d |k}d|k}d|krH| s&| s&| s&| r.t dddl }|j dt dd} |r\|r\t d| | | | dkrzt d| p| p| p| st d|r|dk rt d|r|dk rt d|r|dk rt dt || rdpd| rd pd| rd pd| r d p"d| r0d p2d||d}|}yd}|dksh|dkrp|jrpd"}d}|dkrt}ytj|jj}Wnttfk rYnX|dkr|}|dkrt d|dkr|r|St d | rt||}n<| s| s| rt||}n| r,t||}n t d!||}|rF|St|||||}|}||_|S|jYnXdS)#aOpen file and return a stream. 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The available modes are: ========= =============================================================== Character Meaning --------- --------------------------------------------------------------- 'r' open for reading (default) 'w' open for writing, truncating the file first 'x' create a new file and open it for writing 'a' open for writing, appending to the end of the file if it exists 'b' binary mode 't' text mode (default) '+' open a disk file for updating (reading and writing) 'U' universal newline mode (deprecated) ========= =============================================================== The default mode is 'rt' (open for reading text). For binary random access, the mode 'w+b' opens and truncates the file to 0 bytes, while 'r+b' opens the file without truncation. The 'x' mode implies 'w' and raises an `FileExistsError` if the file already exists. Python distinguishes between files opened in binary and text modes, even when the underlying operating system doesn't. Files opened in binary mode (appending 'b' to the mode argument) return contents as bytes objects without any decoding. In text mode (the default, or when 't' is appended to the mode argument), the contents of the file are returned as strings, the bytes having been first decoded using a platform-dependent encoding or using the specified encoding if given. 'U' mode is deprecated and will raise an exception in future versions of Python. It has no effect in Python 3. Use newline to control universal newlines mode. buffering is an optional integer used to set the buffering policy. Pass 0 to switch buffering off (only allowed in binary mode), 1 to select line buffering (only usable in text mode), and an integer > 1 to indicate the size of a fixed-size chunk buffer. 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