涓�.甯歌鐨勬ā寮�
浜�.渚嬪瓙濡備笅
# r妯″紡
file=open('haha.html','r',encoding='gbk')
f=file.read()
print(f)
file.close()
#聽w妯″紡
file=open('wenjian.txt','w')
file.write('绐楀墠鏄庢湀鍏�')
file.close()
#聽a妯″紡
file=open('wenjian.txt','a')
file.write('绐楀墠鏄庢湀鍏�,鐤戞槸鍦颁笂闇溿��')
file.close()
#聽w+妯″紡
file=open('wenjian.txt','w+')
file.write('涓惧ご鏈涙槑鏈堬紝')
file.seek(0)
a=file.read()
print(a)
file.close()
#聽r+妯″紡
file=open('wenjian.txt','r+')
file.write('浣庡ご鎬濇晠涔�')
file.seek(0)
a=file.read()
print(a)
file.close()
#聽a+妯″紡
file=open('haha.html','a+')
file.write('闀块楣跨殑鑴栧瓙闀�')
file.seek(0)
a=file.read()
print(a)
file.close()
#聽rb妯″紡
file=open('haha.html','rb')
a=file.read()
print(a.decode('gbk'))
file.close()
#聽wb妯″紡
file=open('haha.html','wb')
a='澶圭潃鐏溅涓婇潰鍖�'
a=a.encode('gbk')
file.write(a)
file.close()
#聽ab妯″紡
file=open('haha.html','ab')
a='澶圭潃鐏溅涓婇潰鍖�'
a=a.encode('gbk')
file.write(a)
file.close()
#聽rb+妯″紡
file=open('haha.html','rb+')
a='涓変汉琛屽繀鏈夋垜甯�'
a=a.encode('gbk')
file.write(a)
file.seek(0)
file.read()
file.close()
#聽wb+妯″紡
file=open('haha.html','wb+')
a='涓変汉琛屽繀鏈夋垜甯�11'
a=a.encode('gbk')
file.write(a)
file.seek(0)
file.read()
file.close()
'''
#聽ab+妯″紡
file=open('haha.html','wb+')
a='涓変汉琛屽繀鏈夋垜甯�111'
a=a.encode('gbk')
file.write(a)
file.seek(0)
file.read()
file.close()
娉ㄦ剰锛�
.write()妯″紡锛屄峰鏋滄枃浠朵笉瀛樺湪閭ｄ箞鍒涘缓锛屽鏋滃瓨鍦ㄩ偅涔堝氨鍏堟竻绌猴紝鐒跺悗鍐欏叆鏁版嵁銆�
涓�.璺緞銆俛=f.write('hello world, i am here!')聽 print(a) 杩欐牱鍐欒繑鍥炲�兼槸闀垮害銆�
涓�.璺緞闂
鍦╳indows涓嬶細
鍥�.璇绘暟鎹�
锛堜竴锛� readline锛�
file=open('wenjian.txt','r+')
a=file.write('绐楀墠鏄庢湀鍏�,\n鐤戞槸鍦颁笂闇�,\n')
print(file.readline())
print(file.readline())
file.close()
鎴栬�咃細
file=open('wenjian.txt','r+')
a=file.write('绐楀墠鏄庢湀鍏�,\n鐤戞槸鍦颁笂闇�,\n')
n=1
for i in a :
print(%s:%s)%(n,i)
n+=1
file.close()
锛堜簩锛� readlines锛�
f = open('test.txt','r')
content聽=聽f.readlines()
print(type(content))
i=1
fortempincontent:
print("%d:%s"%(i,聽temp))
i+=1
f.close()
浜�.鑾峰彇鏂囦欢浣嶇疆锛坱ell()锛�
f = open("test.txt","r")
str聽=聽f.read(3)
position = f.tell()
print("褰撳墠鏂囦欢浣嶇疆:聽",聽position)
鍏�.瀹氫綅鏂囦欢浣嶇疆锛坰eek()锛�
1.from:鏂瑰悜
a)0:琛ㄧず鏂囦欢寮�澶达紙python3锛�
b)1:琛ㄧず褰撳墠浣嶇疆锛坧ython2锛�
c)2:琛ㄧず鏂囦欢鏈熬锛坧ython2锛�
f = open("test.txt","r")
str聽=聽f.read(30)
print("璇诲彇鐨勬暟鎹槸:聽",聽str)
#鏌ユ壘褰撳墠浣嶇疆
position聽=聽f.tell()
print("褰撳墠鏂囦欢浣嶇疆:聽",聽position)
#閲嶆柊璁剧疆浣嶇疆
f.seek(5,0)
#鏌ユ壘褰撳墠浣嶇疆
position聽=聽f.tell()
print("褰撳墠鏂囦欢浣嶇疆:聽",聽position)
f.close()
鍥�.os妯″潡
锛堜竴锛�:鏂囦欢鐨勯噸鍛藉悕銆佸垹闄�
锛堜簩锛�:鍒涘缓鏂囦欢澶�
锛堜笁锛夎幏鍙栧綋鍓嶇洰褰�
importos
os.getcwd()
锛堝洓锛夋敼鍙橀粯璁ょ洰褰�
importos
os.chdir("../")
锛堜簲锛夋敼鍙橀粯璁ょ洰褰�
importos
os.listdir("./")
锛堝叚锛夊垹闄ゆ枃浠跺す
importos
os.rmdir("寮犱笁")
import聽shutil
os.rmtree(鈥榤鈥�)
浜�.os.path妯″潡
os.path.abspath(path) #杩斿洖缁濆璺緞
os.path.split(path)
灏唒ath鍒嗗壊鎴愮洰褰曞拰鏂囦欢鍚嶄簩鍏冪粍杩斿洖銆�
>>> os.path.split('c:\\csv\\test.csv')
('c:\\csv', 'test.csv')
>>> os.path.split('c:\\csv\\')
('c:\\csv', '')
os.path.dirname(path)
杩斿洖path鐨勭洰褰曘�傚叾瀹炲氨鏄痮s.path.split(path)鐨勭涓�涓厓绱犮��
>>> os.path.dirname('c:\\csv\test.csv')
'c:\\'
>>> os.path.dirname('c:\\csv')
'c:\\'
os.path.exists(path)
濡傛灉path瀛樺湪锛岃繑鍥濼rue锛涘鏋減ath涓嶅瓨鍦紝杩斿洖False銆�
>>> os.path.exists('c:\\')
True
>>> os.path.exists('c:\\csv\\test.csv')
False
os.path.isabs(path)
濡傛灉path鏄粷瀵硅矾寰勶紝杩斿洖True銆�
os.path.isfile(path)
濡傛灉path鏄竴涓瓨鍦ㄧ殑鏂囦欢锛岃繑鍥濼rue銆傚惁鍒欒繑鍥濬alse銆�
>>> os.path.isfile('c:\\boot.ini')
True
>>> os.path.isfile('c:\\csv\\test.csv')
False
>>> os.path.isfile('c:\\csv\\')
False
os.path.isdir(path)
濡傛灉path鏄竴涓瓨鍦ㄧ殑鐩綍锛屽垯杩斿洖True銆傚惁鍒欒繑鍥濬alse銆�
>>> os.path.isdir('c:\\')
True
>>> os.path.isdir('c:\\csv\\')
False
>>> os.path.isdir('c:\\windows\\test.csv')
False