Python练习册，每天一个小程序（二）
第 0001 题： 做为 Apple Store App 独立开发者，你要搞限时促销，为你的应用生成激活码（或者优惠券），使用 Python 如何生成 200 个激活码（或者优惠券）？
解答：假设生成的激活码为16位code，如：Qlgh-2zEx-dmGg-vzWQ，每个code由数字、大小写字母组成；
完成这个题，需要用Python中两个库：
（1）random.randint(a,b）随机生成一个范围a-b之间的整数
（2）string库：String模块中，包含大量实用常量和类：
string.ascii_lowercase 包含所有小写字母的字符串常量：'a-z'string.ascii_uppercase 包含所有大写字母的字符串常量：'A-Z'string.ascii_letters 包含所有大小写字母的字符串常量：'a-zA-Z'string.digits 包含数字0到9的字符串常量：'0123456789'
附上代码：
import random
import string
s = string.ascii_letters + string.digits
print(s)
code_list=[]
for i in range(0,200):
code = ""
for j in range(0, 16):
if j % 4 == 0 and j:
code += "-"
code += s[random.randint(0, len(s)-1)]
code_list.append(code)
print(code_list)每隔四个字符，添加一个“-”，运行结果为：
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789
['Q5xC-svtC-UPiL-cdds', 'Ix1H-pDsv-ylys-OQ3n', 'pI1M-IoB1-Kff1-2VHf', 'msKn-SrY1-4GY3-gAET', 'cg5J-DpyF-zFgg-rHqZ', 'kn0s-1mam-ZgCo-9N5c', 'nheB-f06e-1sp6-CDr5', 'DO2L-6Qne-SlPY-JtfM', 'BjUF-If9T-fKaA-8wGX', 'VbpJ-e8Q7-avGR-rijd', 'r7Jq-QYuA-2UPh-FFmj', 'ODEm-60YT-NBJM-dl2g', '0cvY-Tiso-PqFn-3G84', 'tBjU-FSlW-rc5A-6upE', 'ZajQ-p7Jd-kZO6-mR6k', 'uqNi-trYN-7xGy-DIUl', '2AVD-eLsE-blWU-zkvK', '32gJ-vj1g-CViM-ptg0', 'LGJV-93qQ-5SIu-vE7Z', '8gYO-SJts-qKKP-JQlY', 'esfP-ZrtP-89Ha-hyHb', 'di91-qIjC-GON6-zFmH', 'tAAZ-xYv2-eoQ3-jCiI', 'RRdc-eln1-GoNm-Xnwa', '9GSC-0cbd-T1oG-R0xe', 'APm7-Tk8O-j8bO-QNpG', 'ZIJK-SKUG-X58M-GmaC', '3CAe-jlLK-OhTX-psOg', '36P0-2Ha6-HIjn-2hcu', '87AF-4Gpr-Aw8n-r0Vu', 'yCIQ-L0KW-HT1S-k5dU', 'n2fq-LnkO-w8a0-AQ99', 'VFC0-wmdj-E2mF-LZk2', 'XOSx-53EX-obfp-0DZ1', 'hGY1-8YmF-j36g-WhFE', 'AQti-ekoJ-qrFB-Q3dr', 'brte-NRlz-M0k9-2BNP', 'Wfih-hmJO-tMpl-bIbm', 'nZmH-c3JO-XvZg-lkWe', 'By8U-Ps4q-7eQH-gi3l', 'FJHf-V5cN-AdDy-e8fw', '1iHR-lVK2-NqXQ-ZlIy', 'VZG6-2JD1-JQSy-OI3k', 'wvxo-tFHt-Zukc-9fyv', 'EVrw-9Gcm-8XE4-LCge', 'fNvP-A1QX-OLip-AfDk', 'DvUH-9sB8-py64-SS0A', '4Evl-UXJN-rrXl-hb21', 'AlF6-asQZ-yAsu-0Ot0', 'KEwA-qa2W-7jHy-aVDa', '6mqL-FJBa-OT3g-Gjvo', 'mW90-Ps9g-h7iZ-yO76', 'Zx4a-jhg6-KoBL-vOXF', 'Gvbs-yFsn-m9mZ-La6n', 'KSgx-6FRt-As78-6mW7', '79jy-YKQ8-FxDE-Se4Q', 'JS0H-eoGh-AB9z-Zh2g', 'BNLz-16JQ-oPEY-bFfR', 'jfBb-VqKs-39Gk-QIFK', 'dDeM-uAKK-jRGF-PQ95', 'gHzV-MKy4-UYkJ-v974', 'uaix-svNn-fyo4-Z7ZV', 'heTe-woIx-cy2L-pN3o', 'YUHZ-u7Rh-I7z9-yN75', 'v8x0-Ejdo-4hsG-VjB6', '5V5h-Iibd-6aK7-wp1v', 'w5QH-lQrW-xiHC-AcF3', 'MLse-ZJPi-5AKn-7ZDB', 'PsXu-TSF3-EhAU-LXbB', 'Dvgx-2D9A-L8Ll-Ah7j', 'YPT1-RifA-837l-lD2O', 'xE9i-L87Y-tQhO-lCyp', 'P88O-8l0A-K99F-SeAq', 'Jg1e-Ndzj-C9OR-tP5J', 'AqXg-WfJC-Fa2U-KRzd', 'az03-kE4o-lw2V-1XLQ', 'K1lC-549v-Y4fN-nGVe', 'yokG-AYCb-1FgN-QwVz', 'zNAP-XkXe-GM3W-kByW', 'MMaG-SrDh-W7We-YZJ5', 'SeUY-uxKl-CXJB-IcFr', '43wi-kwZO-DNAs-86U0', 'KOTM-e6Bs-4iS2-ImM8', '1T7V-8TGw-AK1r-fogH', 'Aw9B-Kmhi-Jgsa-INB7', 'RFiC-4GWC-0xkP-sT6d', 'H8dJ-IZqU-oADE-7rxU', 'HrdP-cejQ-ZIYg-WqLf', '0khQ-BxW6-ary5-XLGb', 'QyKt-vsQV-EPBU-WUVt', 'mNqs-1rdi-d7tg-49ec', 'Heu2-5LmL-Dnwr-MpUp', 'Xymx-iWSL-WuO8-Gc1o', 'FaYs-Ig4j-Boa5-OfhD', 'rZ25-Jvwm-dDam-J1eF', 'QxPW-fGIK-ha05-rauu', '1toh-jYbQ-6SQK-LENw', 'faWm-dtfO-vrsG-X2a7', 'BdIA-Itb6-ep4X-nBXi', 'AswD-RJZF-fyEU-ZvGu', 'Gn7H-WYfG-whjo-fawK', 'vzBl-SfOk-QUP1-vK6e', 'bz0T-aeV1-aMwy-lx6V', 'soWS-69yE-Kbtz-xRqS', 'WZlG-XICm-U22r-QKSZ', 'UJ9W-tdsb-KRpG-mojI', 'SWc9-rPWL-MA9g-6eng', '1Ag1-HnuV-DHCH-o5qs', 'Qt4N-ReAS-ePE6-VR4l', 'y4SV-4RuA-MX9a-hzwD', '1gG4-F8Dq-ksNA-nSlJ', 'zdzf-eXjM-eYuM-7bD3', 'Mvnw-8AHw-Zegn-3XN0', 'rbWY-8YVI-miYd-S3xq', 'z0HE-X2ba-yq2m-Ih2s', 'ujFW-aAk0-IHck-zTrP', 'kjyg-s3wo-Bpvb-ijlu', '3E6n-jog1-XXzN-Fvt9', 'WGU2-j65n-GWej-KnjZ', 'pbgk-jIer-0qFu-jh4q', '2sHN-8Hv8-dXNj-ydEg', 'dKQ6-iPag-dSu3-Jy7o', 'oIPs-gFIX-uYy2-TLSD', 'CqPz-mO4X-Uw33-DgEA', 'rSf9-zS18-Awrw-atae', 'Prg3-fz9H-4STI-IMTH', 'E7yT-RTD2-lOhK-mgNG', 'mED0-uQzG-NUgR-je2w', 'JI9v-DMLy-U6PT-Yo7L', 'dO9l-UhFZ-a0sT-icG0', 'cF58-DoCD-rTtI-MdE4', '0xit-Sraw-bIXX-RWwY', 'iYt2-UiCr-eYAJ-tFY0', 'bQF6-SrjW-kFmF-HHqg', 'qfJW-x5Mx-yRLp-zZss', '9QrQ-tUZl-gnFK-1qMs', 'HrZ5-h5Uu-OIKm-s99G', 'QUnr-qpDt-23ks-S4ZE', 'nEpf-rqfm-s8sz-IjOy', 'hDWs-DdgS-0sjO-J79w', 'zRmX-ddxD-dSne-3Eqm', '30pT-rnkq-XUug-A4gs', 'pdNH-ev77-qDWa-FYSE', 'Wz9j-DTMO-egTK-VHlj', 'oYka-CRUY-hKLO-ilEc', '9Ymf-hz89-bwkF-1aDx', '851Z-80b1-vibN-cSDr', 'CNU8-IoMm-Woup-pb3U', 'YlAq-pTHc-mTWO-OUgq', 'Kkju-bPux-V1k1-vmhV', 'fDqu-s5k4-AMUU-tsb0', 'BqRj-m8wT-59w5-vWxv', '9bCA-8gyf-Db29-liIN', 'gkpN-0PdR-6V23-qjGR', 'BuU2-1Weu-6GxU-IUSE', 'FMiD-qt6O-cha9-Eqvx', '0tW4-XpCF-M6aB-A5J7', 'QMN2-lfzn-MU5y-51MG', 'oKdh-bWa7-CiXN-yxs0', '6tk9-r2JU-8Wqp-4Myx', 'AhnL-rc96-LeGp-sy4M', 'LlS8-uAG3-g3KD-2ixS', 'OC8Y-6PNz-ZDQA-jvoJ', 'tVMr-cOT6-Wgft-PTpu', 'o3nH-cSc3-raho-SBDK', '9DsN-bUF0-7xfF-drsi', 'rgHH-RTI9-W3Rg-bAL1', 'BJcC-GXhW-xUL2-CS49', 'Lf8a-K6tq-9JNm-YMV3', '5PD0-i7QU-cyvQ-9Q7L', 'ALgB-BSU1-m4yW-NOMu', '2E3m-ttge-wG15-D1bO', 'yTEV-Oafa-KqCb-L3JF', 'UZiL-D7Vr-Csk9-dCjE', 'tnP2-10jI-d5bV-4qMh', 'tTy4-o8Ke-cRp9-YjRq', 'sbTH-cEAF-P0ft-xvKQ', 'i2ra-mLzj-sGff-zxzk', 'XiCq-DHmR-kLoc-5UrI', 'Mp2S-2wUW-iSmQ-Q0Wu', 'qgsp-D70k-a9CA-7fWD', 'Txkx-cAHV-LR6y-Wfda', 'e6pL-P86n-VebR-Ta85', 'Ge0E-zMLR-QCN7-G3bW', 'usjV-TeGE-N8ST-FBcp', '19UD-CTel-1Zwp-9kT4', 'BNum-X280-4NK1-eegJ', '2kDh-w2GG-eKrR-x296', 'e156-HB2o-8NXE-kOO3', 'cVC9-7rx7-ylxb-kk3u', 'ZcXP-MDNf-dTum-Bz3I', 'Es36-RfvU-k0EN-5Efe', '27HK-kYGM-lJ4n-eLqN', 'yNO6-ccZy-UczJ-wOIy', '4xvN-kqSq-fw3W-Fng4', 'NUb6-OXx3-Yarz-GI8z', 'AvkI-ofcy-lsZn-zpfR', 'ZoOI-0bOu-v1Dw-ae0k', 'EPYq-j6hS-53yr-Kffo', 'UHyQ-a3CN-AAbs-enrt']