<address id="bztp3"><nobr id="bztp3"></nobr></address>

      <sub id="bztp3"><listing id="bztp3"><menuitem id="bztp3"></menuitem></listing></sub>

        <form id="bztp3"></form>

        <address id="bztp3"></address>
        <sub id="bztp3"></sub>

          <form id="bztp3"></form>

              if語句基礎知識【每日一個知識點第197期-Python】

              Python中if語句的一般形式如下所示:

              if condition_1: statement_block_1 elif condition_2: statement_block_2 else: statement_block_3
              • 如果 “condition_1” 為 True 將執行 “statement_block_1” 塊語句
              • 如果 “condition_1” 為False,將判斷 “condition_2”
              • 如果”condition_2″ 為 True 將執行 “statement_block_2” 塊語句
              • 如果 “condition_2” 為False,將執行”statement_block_3″塊語句

              Python 中用?elif?代替了?else if,所以if語句的關鍵字為:if – elif – else

              注意:

              • 1、每個條件后面要使用冒號?:,表示接下來是滿足條件后要執行的語句塊。
              • 2、使用縮進來劃分語句塊,相同縮進數的語句在一起組成一個語句塊。
              • 3、在Python中沒有switch – case語句。

              實例

              以下是一個簡單的 if 實例:

              實例

              #!/usr/bin/python3 var1 = 100 if var1: print (1 – if 表達式條件為 true) print (var1) var2 = 0 if var2: print (2 – if 表達式條件為 true) print (var2) print (Good bye!)

              執行以上代碼,輸出結果為:

              1 - if 表達式條件為 true
              100
              Good bye!

              從結果可以看到由于變量 var2 為 0,所以對應的 if 內的語句沒有執行。

              以下實例演示了狗的年齡計算判斷:

              實例

              #!/usr/bin/python3
              
              age = int(input("請輸入你家狗狗的年齡: "))
              
                  print("")
              
              if age < 0:
              
                  print("你是在逗我吧!")
              
              elif age == 1:
              
                  print("相當于 14 歲的人。")
              
              elif age == 2:
              
                  print("相當于 22 歲的人。")
              
              elif age > 2:
              
                  human = 22 + (age -2)*5
               
                  print("對應人類年齡: ", human)
              
              ### 退出提示
              
              
              input("點擊 enter 鍵退出")

               

              將以上腳本保存在dog.py文件中,并執行該腳本:

              $ python3 dog.py 
              請輸入你家狗狗的年齡: 1
              
              相當于 14 歲的人。
              點擊 enter 鍵退出

              Python入門每日一個知識點》欄目是馬哥教育Python年薪20萬+的學員社群特別發起,分享Python工具、Python語法、Python項目等知識點,幫助大家快速的了解Python學習,快速步入Python高薪的快車道。

              【13萬+人學習】《Python自動化全能開發從入門到精通》python基礎教程筆記全放送

              相關新聞

              聯系我們

              400-080-6560

              在線咨詢:點擊這里給我發消息

              郵件:work@magedu.com

              工作時間:周一至周日,09:00-18:30

              QR code
              656彩票平台656彩票主页656彩票网站656彩票官网656彩票娱乐 38820011.com | www.vns8906.com | 4066g.com | www.929533.com | www.848777m.com | www.hg9765.com | 11555156.com | www.375769.com | www.xpj77123.com | www.8k365.com | 22ww8332.com | 3379gg.com | www.1777ac.com | www.jz30280.com | www.653504.com | n888vv.com | www.347177.com | www.56011v.com | www.p9929.net | a58955.com | qp168.shsxiwl.cn | www.709720.com | www.588714.com | www.66300e.com | tz3222.com | 8888jdb.com | www.5cpb.com | www.hg9209.com | www.hg8452.com | 3844.am | hg91910.com | www.866248.com | www.79095q.com | www.hg6288.com | www.hm6988.com | www.xj6006.com | www.pj9654.com | 33hh8331.com | 033f.net | 9288.us | www.00840p.com | www.hg8oo.com | www.3643r.com | hgyz5.com | 4136u.com | www.156518.com | www.50051w.com | www.sha2222.com | www.0860d.com | uuu5682.com | 59522w.com | www.187515.com | www.54400s.com | www.623906.com | www.57798.com | www.86611y.com | nnn3405.com | 1305777.com | www.727079.com | www.48330.com | www.cp505c.com | www.x7044.com | pjyunnan.com | j77304.com | m333999.com | www.627792.com | www.0270x.com | www.4996ty.com | www.0400005.com | www.01018.cc | 80850m.com | xh9.com | 3788m.com | www.338081.com | www.26878g.com | www.33678ff.com | www.188614.com | www.zzzz0291.com | 8898111.com | 38365r.com | zb6288.com | 520666.com | www.799346.com | www.81233hh.com | www.055260.com | www.vs1368.com | www.0153h.com | www.sjs14.com | v8738.com | 6175yy.com | 77201.com | swty.com | www.003963.com | www.756398.com | www.33598y.com | www.35898a.com | www.377666y.com | www.5504d.com | www.153msc.com | www.67797i.com | www.1869z.com | swin1.com | 4036ww.com | 55797y.com | 9002s.com | djbet338.com | 6699734.com | P35dd.com | www.216299.com | www.865820.com | www.30601.cc | www.80065w.com | www.1466e.com | www.30350i.com | www.16181j.com | www.jcbo13.com | www.mailebi.com | www.yh1618.com | www.4107f.com | www.hgw2088.net | 4379b.com | 7945ee.com | 6220y.com | 36566.bet | pj00oo.com | 41188822.com | 67890d.com | 50883.com | 35675.com | 2455g.com | www.58665p.com | www.099923.com | www.hg9568.com | www.25025.cc | www.8679822.com | www.7776358.com | www.27706.com | www.xpj8858.com | www.qam444.com | www.8124a.com | www.7720o.com | www.pjgansu.com | www.7669d.net | www.4938i.com | www.0151u.com | www.s668839.com | www.2846i.com | www.hg285.com | www.28624.com | www.133141.com | www.1hg88.us | 22207u.com | www.8aobo.com | www.76060s.com | www.yd555888.com | www.58777d.com | www.hg061.com | www.0004111.com | www.6778msc.com | www.z7793.com | www.mhcp4.com | www.27363u.com | www.3bet005.com | www.9895u.com | www.yl61332.com | www.hg77730.com | www.sb4010.com | www.41518l.com | www.ya238.com | www.701548.com | www.094499.com | sbfa66.com | 59759i.vip | 1389b.com | 463k7.com | bet727.com | 3452015.com | 222p1.cc | www.25288m.com | www.xpj9238.com | www.5504p.com | www.068717.com | www.55676d.com | www.95777w.com | www.hj7987.com | www.528121.com | www.41518v.com | zhcp88.com | 7570k1.com | 4107e.com | 55818y.com | www.vns6166.com | www.88051.net | www.jy879.com | www.00778k.com | www.4520022.com | www.21202s.com | www.679957.com | 0805n.com | 550111t.com | 9679n.com | 83377y.com | www.alpk99.com | www.88jt99.com | www.3032hh.com | www.rfdc01.com | www.902771.com | 08530001.com | 112n.net | 00014066.com | www.hg091.com | www.89677j.com | www.9646z.com | www.901758.com | h7742.com | 5478w.com | 20073365.com | www.63877k.com | www.pj79777.com | www.87708d.com | www.61233y.com | www.376531.com | lhc907.com | hd8449.com | www.7435g.com | www.856046.com | www.69989b.com | www.54400q.com | www.500107.com | 547902.com | 70118m.com | www.yinhecc44.com | www.5049c.com | www.81608u.com | www.848766.com | 3245y.com | 333790a.com | www.hg77848.com | www.2544k9.com | www.252018.com | www.003ac.com | 33115m.com | 30688z.com | www.pjhubei.com | www.c44vv.com | www.3066hh.com | www.196705.com | w3298.com | 99151n.com | www.75hk.com | www.3a008.com | www.587810.com | 44999193.com | bwin.com | www.35252n.com | www.99677q.com | 2618o.com | 3482g.com | www.vnsr00888.com | www.jj9991.com | www.36788p.com | 2546o.com | 4255vvv.com | www.87680s.com | www.4196o.com | www.qucw1.com | 4323i.com | 2776t.com | www.4650000.com | www.8828229.com | www.081501.com | mopayclub.com | www.kb7070.com | www.4972i.com | www.3552h.com | 9964k.com | feicai0477.com | www.46678.com | www.954321z.com | 48330N.com | 2226gp.com | www.k973.com | www.8656.cc | 234905.com | g5429.com | www.20288r.com | www.606010.com | 0109js.com | 123hwjx.com | www.567711.com | www.0270e.com | vn258.com | 6769.cc | www.998855c.com | www.11gpc.com | 4995u.com | www.hg748.com | www.js89k.vip | www.103380.com | www.682021.com | 22296ee.com | 44077g.com | www.85857.com | www.fcyl5.com | 667766xcom | www.1348-5.com | www.8905s.com | www.53900o.com | 310577.com | www.siji5.com | www.2350n.com | 5295g.com | www.67797q.com | www.48330s.com | yk802.com | 685511q.com | www.v00888.com | www.196091.com | pjxianggang.com | www.998855m.com | www.879869.com | 4488.cc | www.10852b.com | www.07czj.com | 0805p.com | www.22235b.com | www.50080g.com | se679.com | www.ms8873.com | www.50788g.com | 206403.com | www.fedxb.com | www.00665a.com | sbd027.net | www.g4737.com | www.p77929.com | 2381xxx.com | www.520195.com | www.65707g.com | 3559s.com | www.tbb003.com | www.08588h.com | 1317345.com | www.1681688888.com | www.hczx4.com | 3566ll.com | www.55526a.com | www.606187.com | js75776.com | www.04567n.com | www.379969.com | 37570f.com | www.7366004.com | 6199900.com | www.y613377.com | www.8582ee.com | ws365.cn | www.64566j.com | www.690477.com | g61653.com | www.369404.com | 3482h.com | www.00618j.com | www.22303.cc | 01234kk.com | www.71071d.com | 2418t.com | www.xpj8818.com | www.50051j.com | 9506c.com | www.19019f.com | js75dd.com | www.223456o.com | www.60108q.com | 3522r.cc | www.5207666.com | 0747cc.com | www.l30226.com | www.782w.com | 88662007.com | www.7920o.com | 5429i.com | www.tyc800.com | www.717699.com | www.63260.com | www.50054y.com | swtyggg.com | www.vip9584.com | 99909w.com | www.tqdc222.com | www.cjcp600.com | xpj588.com | www.bet73n.com | js4136.com | www.c1432.com | nn500v.com | www.77099.com | www.249880.com | www.pu2678.com | www.9818f.cc | 55uu8332.com | www.879528.com | 9993865.com | www.340388.com | 50099vip.com | www.sscb77.cc | 7894g.com | www.dz8789.com | 6002aa.com | www.2078q.com | www.541911.com | www.hg77848.com | www.5xcr.com | 3844ww.com | www.52072z.com | a757033.com | www.0601a.com | 29918.com | www.126629.com | dzjcp.com | www.5886mm.com | 83138m.com | www.45598i.com | 67877w.com | www.3066zz.com | 3534t.com | www.55070z.com | 4186.com | www.783644.com | 9090gbh.com | www.13k0048.com | 3122s.com | www.704902.com | qqcp.com | www.837929.com | 53262r.com | www.flb177.com | kk01234.com | www.5856872.com | 8988s.com | www.bet73i.com | 预览444000p.com | www.60123w.com | oo2649.com | www.500yf.com | www.pu2018.com | www.783709.com | www.9992558.com | www.196705.com | www.08159g.com | www.021700.com | tt888y.com | www.bet63n.com | 8383394.com | www.88xpj68.com | 24007.com | www.66332b.com | 3131aa.cc | www.794918.com | www.362822.com | js58123.com | www.59875.com | 8036x.com | www.820031.com | 3559vv.com | www.66653m.com | 1168b.com | www.394577.com | www.777888yh.com | 3404w.cc | www.62979f.com | 50099h.com | www.6832y.com | www.767xpj.com | www.60108v.com | www.76775j.com | mgm3242.co | www.851895.com | hg91338.com | www.815055.com | www.js778911.com | www.86999.com | 4461y.com | www.66332m.com | www.0853g.com | www.890402.com | www.53532.com | feicai0516.com | www.30099.com | www.77802i.com | www.56655k.com | 809h39.com | www.50024b.com | www.vns9938.com | 3434b.com | www.yh67.net | 26444k.com | www.652631.com | www.87669.com | 86688008.com | www.61233f.com | www.hg77009.com | 1483yy.com | www.5719v.com | 7935j.com | www.178379.com | www.1168o.com | n21148.com | www.2632c.com | www.a2399.com | 2677jjj.com | www.8582qq.com | www.333222r.com | 99wb8.com | www.86339e.com | yin1044.com | spsgz.com | www.18955.bet | ff555t.com | www.081503.com | www.0055xpj.net | 11442007.com | www.178759.com | www.472702.com | 0805u.com | www.163734.com | www.55060a.com | mgm3242.com | www.047788.com | www.bwinyz09.com | 8905j.com | hg15515.com | www.44118v.com | 1654gg.com | 81511a.com | www.68993253.com | www.h7788e.com | 88850dd.com | www.25688g.com | www.395599.com | www.55717p.com | www.hg002222.com | 4036cc.com | www.5095c.com | www.5678096.com | 39199d.com | www.606530.com | www.848777f.com | 7792s.com | 25800.com | www.427786.com | www.122yh.com | www.48330i.com | www.sky2888.com | 1813dd.com | www.995771.com | ylg2001.com | www.gyfc1.com | www.dfh300.com | 3178u.com | aa33339.com | www.89777y.com | www.6463.cc | 5219b.com | www.444069.com | www.yh234c.com | www.am22222.com | 79964x.com | www.hycb8.com | www.0661777.com | hg07111.com | 1389g.com | www.2373n.com | www.77731w.com | 3844uu.com | 1495f9.com | www.50233.cc | www.01711.com | xpj29977.com | bm1396.cc | www.983888a.com | www.22666.com | www.1869i.com | 316.cc | www.715613.com | www.704907.com | www.56520a.com | 19880v.com | www.275073.com | www.52062q.com | www.5028hg.com | 50099g.com | 5004zz.com | www.9478a.com | www.r3065.com | www.7435u.com | 407pp.com | www.106569.com | www.hb598.com | www.hg0699.com | 2543009.com | r4212.com | www.534077.com | www.765.me | www.js06888.com | 2997706.com | hgw168p.com | www.587639.com | www.8083.am | www.23277.com | feicai0952.com | 991682.com | www.398118.com | www.16065j.com | www.e0437.com | www.tbb005.com | 6175hh.com | 28288uu.com | www.6832i.com | www.bwinyz24.com | www.84898v.com | 26668f.com | 144258.com | www.314213.com | www.2222bj.com | www.79500n.com | www.270667.com | www.301711.com | www.bb55826.com | www.55268yy.com | 11884747.com | 66331381.com | www.170882.com | www.36166p.com | www.c7764.com | www.xpj1938.com | 51335h.com | 4289a.com | 3189o.com | www.588980.com | www.yh76vv.com | www.788jyh.com | www.seqhi.com | 5004sss.com | g4212.com | 400w.am | www.362588.com | www.50026c.com | www.938690.com | www.48968.com | www.44488806.com | feicai0908.com | 060ccc.com | 33115vv.com | www.433737.com | www.08500w.com | www.07679e.com | www.021700.com | www.655666a.com | zhcp85.com | 6487qqq.com | y6840.com | 48452.com | www.hgbet33.com | 8827fff.com | 3662c.com | js99449.com | 44ydgj.com | www.799243.com | www.51515y.com | www.9187e.com | www.137603.com | www.amjs95.com | www.pjliaoning.com | 55899g.com | 5219o.com | dgd0000.com | 2998006.co | www.223335.com | www.679by.com | www.tyc44222.com | www.y6098.com | www.bscpjj.com | www.hg00868.com | www.sb8889.com | ylg9888.com | bs78911.com | 08778p.com | afcp04.com | 7196z.com | 97297r.com | www.504377.com | www.371q.cc | www.81520f.com | www.8855287.com | www.7225o.com | www.cgcp.com | www.hg6733.com | www.6178007.com | www.benz4433s.com | 5030.com | 9995m.cc | 8557a.com | 655661133.com | 3748.com | 8722kkkk.com | 2767dcom | 54443u.com | hg99957.com | 983888y.com | 403237.com | www.001059.com | www.338035.com | www.825799.com | www.qmfc1.com | www.4189e.com | www.54400h.com | www.03088.com | www.206269.com | www.pj888l.com | www.js57788.com | www.44118g.com | www.q063801.com | www.35700aa.com | www.wnsr3536.com | www.5099nn.com | www.wct555.com | www.sj52088.com | www.kbcp1.com | www.76775d.com | www.hg8423.com | www.hg6898.com | www.pj98914.com | www.5045678.com | www.ylg1108.com | www.vb003.com | www.15011i.com | www.pj5506.com | www.0904xpj.com | www.hg83555.com | www.00618o.com | www.0860e.com | www.pj6339.com | www.0241mmm.com | www.3353k.com | www.5312m.com | www.815333.com | www.443344.com | www.amh400.com | www.9611ll.com | www.938n.cc | www.rr55826.com | www.10999i.com | www.yh234d.com | www.8905.com | www.7681006.com | www.4331a.com | www.86267hh.com | www.6832g.com | www.hm3355.com | www.808523.com | www.550174.com | www.739366.com | www.317199.com | www.36788v.com | 2709q.com | 68xinbo.com | tz478.com | gg40033.com | 38850088.com | 500000795.com | www.68666j.com | www.809990.com | www.88850z.com | www.hg7841.com | www.55545o.com | www.79095s.com | www.6889786.com | www.51515l.com | www.969751.com | www.413552.com | 87570ht.com | swtyhhh.com | 0099066.com | afcp09.com | y980.com | www.10899b.com | www.444171.com | www.16008.com | www.xpj3.net | www.550021k.com | www.fyyy4.com | www.332907.com | 9103pp.com | 655660066.com | hg1044.com | 30019r.com | www.9996zz.com | www.460707.com | www.99mgm777.com | www.683158.com | www.5522g.cc | www.447478.com | 2546z.com | spj04.com | 79333040.com | 5144y.com | www.365v06.com | www.8k002.com | www.xpj815.com | www.7681002.com | www.3668z.com | www.375736.com | 5350k.com | hy756.com | 6245j.com | www.9996oo.com | www.3122d.com | www.wns77.me | www.5095k.com | www.263289.com | 30006r.com | 5856h.com | 38345b.com | www.130031.com | www.7415ii.com | www.954321i.com | www.912063.com | 022679.com | 69441144.com | t365c.com | www.8030c.com | www.673888p.com | www.7957988.com | www.606614.com | 11422s.com | tb2223.com | www.38200i.com | www.fc351.com | www.308105.com | www.978315.com | hgyz888.com | y14666.com | www.xsj900.com | www.mgdc47.com | www.1434z.com | www.907712.com | feicai0453.com | 3559nn.com | www.1111wns.com | www.2y938.com | www.0967001.com | www.590808.com | 44488p.com | 9649t.com | www.0860x.com | www.6600ra8.com | www.26163g.com | 60540055.com | 37688k.com | www.ylg258.com | www.v948v.com | www.pj56.com | www.191761.com | 3559cc.com | 2060055.com | www.82810.com | www.9996tt.com | www.413552.com | pjxinjiang.com | 18775k.com | www.suncity758.com | www.aobo192.com | www.095069.com | 8299138.com | www.38200n.com | www.00618d.com | www.8816o.com | 29918a.com | 50099i.com | www.hg2219.com | www.3678.com | www.529979.com | 7605m.com | www.a1a000.cc | www.xy048.com | www.33997.com | hg993.cc | x2649.com | www.444540.com | www.4923v.com | 00074066.com | 22117r.com | www.ff13558.com | www.1851222.com | www.452809.com | 6175yy.com | www.17848.cc | www.1117795.com | www.599840.com | 0073.com | www.995n.net | www.839282.com | www.318187.com | 566777e.com | www.25288n.com | www.881543.com | www.83033e.com | 3340.com | www.js12258.com | www.xhg338.Com | baidu169.com | 228888h.com | www.79500e.com | www.878zf.com | ll8159.cc | www.ts00888.com | www.369406.com | www.394689.com | 71707r.com | www.xg40.com | www.66376x.com | j15.com | 9420s.com | www.783644.com | www.444801.com | 992222e.com | www.gf949888.com | www.50080j.com | 88851q.com | www.nav.jbb0016.com | www.3824.com | www.191061.com | 496cc.com | www.299488.com | www.9818x.cc | 29918v.com | www.3643c.com | www.089728.com | 76543k.com | 6641ss.com | www.45598y.com | www.296180.com | wlb55.com | www.2302326.com | www.qmkl0.com | ctxdh.com | www.8030c.com | www.26878f.com | 2324vvv.com | www.799msc.com | www.a79839.com | k8381.com | www.98699.com | www.pj99e.com | hg999333n.com | www.32126s.net | www.186664.com | wnsr8819.com | www.38200f.com | www.amjs339.com | x33t.vip | www.m.kb88.com | www.0343h.com | 3156iii.com | www.vns1209.com | www.9422f.com | 99909f.com | www.0xinhao.com | www.2418y.com | p76.com | www.aa3143.com | www.88266n.com | pj00aa.com | www.917xpj4.com | www.2109h.com | 4443865.com | www.3362msc.com | www.702392.com | 88851y.com | www.4496877.com | www.106235.com | d8503.com | www.3846a.com | 3156iii.com | www.b30226.com | www.33112k.com | 075nn.com | www.68277888.com | www.342377.com | 2543009.com | www.7737ff.com | 08159q.com | www.hg0084.com | www.hm6622.com | 61325500.com | www.14k0048.com | 588zzz.cc | www.4625t.com | www.12455t.com | so555.cc | www.jz9688.com | 1389k.com | www.1019995.com | www.66652g.com | 3559fff.com | www.6616008.com | sxrkrdjq12.com | www.38200z.com | www.51331b.com | 8037e.com | www.19019v.com | 4499buyu.com | www.365815e.com | www.371t.cc | 55545n.com | www.44118z.com | 0099341.com | www.hg5779.com | www.544096.com | 3333xsj.com | www.1666c.com | 3421h.com | www.848777e.com | 2190e.com | www.79890m.com | www.587639.com | xpj70069.com | www.77114r.com | 4556b.com | www.115527x.com | 73055.vip | www.188614.com | www.011225.com | www.36530088.com | www.w593.com | bybc.com | www.37266m.com | 30178877.com | www.00772a.com | 1408d.com | www.hg6009.com | www.186791.com | www.8124w.com | www.30xw.com | 88885.com | www.pujing75.com | so222.cc | www.99552hh.com | 97987-7.com | www.e3065.com | 9030n.com | www.988179.com | www.36166u.com | www.09569d.com | www.637477.com | www.hg618.com | www.w635.com | 2373g.com | www.60108q.com | 20054499.com | www.16065c.com | 4340o.com | www.63568.com | 4165u.com | www.6880bb.com | blr969.com | www.06820l.com | x33y.vip | www.5981p.com | 3983013.com | www.9980.la | 77605t.com | www.50999d.com | 4433634.com | www.jinbocp.com | 3644k.com | www.751cp55.com | 883399z.com | www.38345w.com |