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1.1 ¼òµ¥ËµÃ÷ÈçºÎÑ¡ÔñÕýÈ·µÄPython°æ±¾¡£ ´ð£º

ÔÚÑ¡ÔñPythonµÄʱºò£¬Ò»¶¨ÒªÏÈ¿¼ÂÇÇå³þ×Ô¼ºÑ§Ï°PythonµÄÄ¿µÄÊÇʲô£¬´òËã×öÄÄ·½ÃæµÄ¿ª·¢£¬ÓÐÄÄЩÀ©Õ¹¿â¿ÉÓã¬ÕâЩÀ©Õ¹¿â×î¸ß·´¸´°²×°ºÍÐ¶ÔØÉÏ¡£Í¬Ê±»¹Ó¦¸Ã×¢Ò⣬µ±¸üеÄPython°æ±¾ÍƳöÖ®ºó£¬²»Òª¼±ÓÚ¸üУ¬¶øÊÇÓ¦¸ÃµÈÈ·¶¨×Ô¼ºËù±ØÐëʹÓõÄÀ©Õ¹¿âÒ²ÍÆ³öÁ˽Ïа汾֮ºóÔÙ½øÐиüС£

¾¡¹ÜÈç´Ë£¬Python 3±Ï¾¹ÊÇ´óÊÆËùÇ÷£¬Èç¹ûÄúÔÝʱ»¹Ã»Ïëµ½Òª×öʲôÐÐÒµÁìÓòµÄÓ¦Óÿª·¢£¬»òÕß½ö½öÊÇΪÁ˳¢ÊÔÒ»ÖÖеġ¢ºÃÍæµÄÓïÑÔ£¬ÄÇôÇëºÁ²»ÓÌÔ¥µØÑ¡ÔñPython 3.xϵÁеÄ×î¸ß°æ±¾£¨Ä¿Ç°ÊÇPython 3.4.3£©¡£

1.2 Ϊʲô˵Python²ÉÓõÄÊÇ»ùÓÚÖµµÄÄÚ´æ¹ÜÀíģʽ£¿ ´ð£º

Python²ÉÓõÄÊÇ»ùÓÚÖµµÄÄÚ´æ¹ÜÀí·½Ê½£¬Èç¹ûΪ²»Í¬±äÁ¿¸³ÖµÏàֵͬ£¬ÔòÔÚÄÚ´æÖÐÖ»ÓÐÒ»·Ý¸ÃÖµ£¬¶à¸ö±äÁ¿Ö¸Ïòͬһ¿éÄÚ´æµØÖ·£¬ÀýÈçÏÂÃæµÄ´úÂë¡£ >>> x = 3 >>> id(x) >>> y = 3 >>> id(y)

>>> y = 5 >>> id(y) >>> id(x)

1.3 ÔÚPythonÖе¼ÈëÄ£¿éÖеĶÔÏóÓÐÄļ¸ÖÖ·½Ê½£¿ ´ð£º³£ÓõÄÓÐÈýÖÖ·½Ê½£¬·Ö±ðΪ

? import Ä£¿éÃû [as ±ðÃû]

? from Ä£¿éÃû import ¶ÔÏóÃû[ as ±ðÃû] ? from math import *

1.4 ʹÓÃpipÃüÁî°²×°numpy¡¢scipyÄ£¿é¡£ ´ð£ºÔÚÃüÁîÌáʾ·û»·¾³ÏÂÖ´ÐÐÏÂÃæµÄÃüÁ pip install numpy pip install scipy

1.5 ±àд³ÌÐò£¬Óû§ÊäÈëÒ»¸öÈýλÒÔÉϵÄÕûÊý£¬Êä³öÆä°ÙλÒÔÉϵÄÊý×Ö¡£ÀýÈçÓû§ÊäÈë1234£¬Ôò³ÌÐòÊä³ö12¡££¨Ìáʾ£ºÊ¹ÓÃÕû³ýÔËËã¡££©

´ð£º

x = input('Please input an integer of more than 3 digits:') try:

x = int(x) x = x//100 if x == 0:

print('You must input an integer of more than 3 digits.') else: print(x) except BaseException:

print('You must input an integer.') import types

x = input('Please input an integer of more than 3 digits:') if type(x) != types.IntType:

print 'You must input an integer.' elif len(str(x)) != 4:

print 'You must input an integer of more than 3 digits.' else:

print x//100

µÚ2Õ PythonÊý¾Ý½á¹¹

2.1 ΪʲôӦ¾¡Á¿´ÓÁбíµÄβ²¿½øÐÐÔªËØµÄÔö¼ÓÓëɾ³ý²Ù×÷£¿ ´ð£º

µ±ÁбíÔö¼Ó»òɾ³ýÔªËØÊ±£¬Áбí¶ÔÏó×Ô¶¯½øÐÐÄÚ´æÀ©Õ¹»òÊÕËõ£¬´Ó¶ø±£Ö¤ÔªËØÖ®¼äûÓзì϶£¬µ«ÕâÉæ¼°µ½ÁбíÔªËØµÄÒÆ¶¯£¬Ð§Âʽϵͣ¬Ó¦¾¡Á¿´ÓÁбíβ²¿½øÐÐÔªËØµÄÔö¼ÓÓëɾ³ý²Ù×÷ÒÔÌá¸ß´¦ÀíËÙ¶È¡£

2.2 ±àд³ÌÐò£¬Éú³É°üº¬1000¸ö0µ½100Ö®¼äµÄËæ»úÕûÊý£¬²¢Í³¼ÆÃ¿¸öÔªËØµÄ³öÏÖ´ÎÊý¡££¨Ìáʾ£ºÊ¹Óü¯ºÏ¡££©

´ð£º import random

x = [random.randint(0,100) for i in range(1000)] d = set(x) for v in d:

print(v, ':', x.count(v)) import random

x = [random.randint(0,100) for i in range(1000)] d = set(x)

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