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1 Objective Questions |
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2 ------------------- |
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3 |
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4 .. A mininum of 8 questions here (along with answers) |
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5 |
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6 1. Given the list week:: |
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7 |
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8 ["sun", "mon", "tue", "wed", "thu", "fri", "sat"] |
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9 |
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10 ``"Sun" in week`` returns True or False? |
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11 |
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12 Answer: False |
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13 |
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14 #. Given the string ``s = "palindrome"``, what is returned by s[4:] |
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15 |
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16 Answer: ``ndrome`` |
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17 |
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18 #. Given the string ``s = "palindrome"``, what is returned by s[-4] |
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19 |
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20 Answer: ``r`` |
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21 |
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22 #. Given the string ``s = "palindrome"``, what is returned by s[4::-1] |
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23 |
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24 Answer: ``nilap`` |
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25 |
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26 #. Given the string ``s = "palindrome"``, what is returned by s[-4:] |
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27 |
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28 Answer: ``rome`` |
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29 |
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30 #. Given a string ``s = "this is a string"``, how will you change it |
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31 to ``"this isn't a list"`` ? |
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32 |
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33 Answer:: |
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34 |
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35 s = s.replace("string", "list") |
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36 s = s.replace("is", "isn't") |
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37 |
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38 #. Given a string ``s = "this is a string"``, how will you change it |
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39 to ``"THIS ISN'T A LIST"`` ? |
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40 |
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41 Answer:: |
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42 |
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43 s = s.replace("string", "list") |
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44 s = s.replace("is", "isn't") |
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45 s = s.upper() |
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46 |
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47 #. Given a line from a CSV file (comma separated values), convert it |
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48 to a space separated line. |
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49 |
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50 Answer: line.replace(',', ' ') |
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51 |
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52 #. Given the string "F.R.I.E.N.D.S" in s, obtain the "friends". |
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53 |
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54 Answer: ``s[::2].lower()`` |
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55 |
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56 Larger Questions |
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57 ---------------- |
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58 |
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59 .. A minimum of 2 questions here (along with answers) |
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60 |
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61 1. Given the string friends, obtain the string "F.R.I.E.N.D.S". |
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62 |
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63 Answer:: |
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64 |
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65 s = "friends" |
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66 s = s.upper() |
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67 s_list = list(s) |
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68 ".".join(s_list) |
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69 |
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70 2. Given a string with double quotes and single quotes. Interchange |
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71 all the double quotes to single quotes and vice-versa. [Solve it |
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72 for this particular string. Not a generic one. Solve it for a |
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73 generic string, if you know how to iterate over a list.] |
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74 |
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75 s = """ "Isn't this a 'simple' task?" "No, it isn't." "Yes! it is." """ |
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76 |
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77 Answer:: |
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78 |
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79 s = s.replace('"', '#') |
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80 s = s.replace("'", '"') |
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81 s = s.replace('#', "'") |
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82 |
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83 .. depends on ``for`` which is not an LO dependency a generic string. |
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84 |
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85 For generic string |
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86 Answer:: |
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87 |
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88 S = [] |
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89 s_list = s.split("'") |
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90 |
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91 for s_s in s_list: |
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92 S.append(s_s.replace('"', "'")) |
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93 |
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94 s = '"'.join(S) |