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{
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"source": [
"CHAPTER 6: DATA TYPES REVISITED"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"EXAMPLE ON PAGE:199"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
" \n",
"ch=291\n",
"if ch>255:\n",
" ch=ch-256\n",
"print \"\\n%d %c\\n\" % (ch,ch)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"35 #\n",
"\n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"EXAMPLE ON PAGE:199"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
" \n",
"for ch in range(0,256,1):\n",
" print \"%d %c\\n\" % (ch,ch)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"0 \u0000\n",
"\n",
"1 \u0001\n",
"\n",
"2 \u0002\n",
"\n",
"3 \u0003\n",
"\n",
"4 \u0004\n",
"\n",
"5 \u0005\n",
"\n",
"6 \u0006\n",
"\n",
"7 \u0007\n",
"\n",
"8 \b\n",
"\n",
"9 \t\n",
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"10 \n",
"\n",
"\n",
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"\n",
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"\n",
"16 \u0010\n",
"\n",
"17 \u0011\n",
"\n",
"18 \u0012\n",
"\n",
"19 \u0013\n",
"\n",
"20 \u0014\n",
"\n",
"21 \u0015\n",
"\n",
"22 \u0016\n",
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"23 \u0017\n",
"\n",
"24 \u0018\n",
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"25 \u0019\n",
"\n",
"26 \u001a\n",
"\n",
"27 \u001b\n",
"\n",
"28 \u001c",
"\n",
"\n",
"29 \u001d",
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"\n",
"30 \u001e",
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"34 \"\n",
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"35 #\n",
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"36 $\n",
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"37 %\n",
"\n",
"38 &\n",
"\n",
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"40 (\n",
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"41 )\n",
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"43 +\n",
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"44 ,\n",
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"45 -\n",
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"\n",
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"\n",
"50 2\n",
"\n",
"51 3\n",
"\n",
"52 4\n",
"\n",
"53 5\n",
"\n",
"54 6\n",
"\n",
"55 7\n",
"\n",
"56 8\n",
"\n",
"57 9\n",
"\n",
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"66 B\n",
"\n",
"67 C\n",
"\n",
"68 D\n",
"\n",
"69 E\n",
"\n",
"70 F\n",
"\n",
"71 G\n",
"\n",
"72 H\n",
"\n",
"73 I\n",
"\n",
"74 J\n",
"\n",
"75 K\n",
"\n",
"76 L\n",
"\n",
"77 M\n",
"\n",
"78 N\n",
"\n",
"79 O\n",
"\n",
"80 P\n",
"\n",
"81 Q\n",
"\n",
"82 R\n",
"\n",
"83 S\n",
"\n",
"84 T\n",
"\n",
"85 U\n",
"\n",
"86 V\n",
"\n",
"87 W\n",
"\n",
"88 X\n",
"\n",
"89 Y\n",
"\n",
"90 Z\n",
"\n",
"91 [\n",
"\n",
"92 \\\n",
"\n",
"93 ]\n",
"\n",
"94 ^\n",
"\n",
"95 _\n",
"\n",
"96 `\n",
"\n",
"97 a\n",
"\n",
"98 b\n",
"\n",
"99 c\n",
"\n",
"100 d\n",
"\n",
"101 e\n",
"\n",
"102 f\n",
"\n",
"103 g\n",
"\n",
"104 h\n",
"\n",
"105 i\n",
"\n",
"106 j\n",
"\n",
"107 k\n",
"\n",
"108 l\n",
"\n",
"109 m\n",
"\n",
"110 n\n",
"\n",
"111 o\n",
"\n",
"112 p\n",
"\n",
"113 q\n",
"\n",
"114 r\n",
"\n",
"115 s\n",
"\n",
"116 t\n",
"\n",
"117 u\n",
"\n",
"118 v\n",
"\n",
"119 w\n",
"\n",
"120 x\n",
"\n",
"121 y\n",
"\n",
"122 z\n",
"\n",
"123 {\n",
"\n",
"124 |\n",
"\n",
"125 }\n",
"\n",
"126 ~\n",
"\n",
"127 \u007f\n",
"\n",
"128 \ufffd\n",
"\n",
"129 \ufffd\n",
"\n",
"130 \ufffd\n",
"\n",
"131 \ufffd\n",
"\n",
"132 \ufffd\n",
"\n",
"133 \ufffd\n",
"\n",
"134 \ufffd\n",
"\n",
"135 \ufffd\n",
"\n",
"136 \ufffd\n",
"\n",
"137 \ufffd\n",
"\n",
"138 \ufffd\n",
"\n",
"139 \ufffd\n",
"\n",
"140 \ufffd\n",
"\n",
"141 \ufffd\n",
"\n",
"142 \ufffd\n",
"\n",
"143 \ufffd\n",
"\n",
"144 \ufffd\n",
"\n",
"145 \ufffd\n",
"\n",
"146 \ufffd\n",
"\n",
"147 \ufffd\n",
"\n",
"148 \ufffd\n",
"\n",
"149 \ufffd\n",
"\n",
"150 \ufffd\n",
"\n",
"151 \ufffd\n",
"\n",
"152 \ufffd\n",
"\n",
"153 \ufffd\n",
"\n",
"154 \ufffd\n",
"\n",
"155 \ufffd\n",
"\n",
"156 \ufffd\n",
"\n",
"157 \ufffd\n",
"\n",
"158 \ufffd\n",
"\n",
"159 \ufffd\n",
"\n",
"160 \ufffd\n",
"\n",
"161 \ufffd\n",
"\n",
"162 \ufffd\n",
"\n",
"163 \ufffd\n",
"\n",
"164 \ufffd\n",
"\n",
"165 \ufffd\n",
"\n",
"166 \ufffd\n",
"\n",
"167 \ufffd\n",
"\n",
"168 \ufffd\n",
"\n",
"169 \ufffd\n",
"\n",
"170 \ufffd\n",
"\n",
"171 \ufffd\n",
"\n",
"172 \ufffd\n",
"\n",
"173 \ufffd\n",
"\n",
"174 \ufffd\n",
"\n",
"175 \ufffd\n",
"\n",
"176 \ufffd\n",
"\n",
"177 \ufffd\n",
"\n",
"178 \ufffd\n",
"\n",
"179 \ufffd\n",
"\n",
"180 \ufffd\n",
"\n",
"181 \ufffd\n",
"\n",
"182 \ufffd\n",
"\n",
"183 \ufffd\n",
"\n",
"184 \ufffd\n",
"\n",
"185 \ufffd\n",
"\n",
"186 \ufffd\n",
"\n",
"187 \ufffd\n",
"\n",
"188 \ufffd\n",
"\n",
"189 \ufffd\n",
"\n",
"190 \ufffd\n",
"\n",
"191 \ufffd\n",
"\n",
"192 \ufffd\n",
"\n",
"193 \ufffd\n",
"\n",
"194 \ufffd\n",
"\n",
"195 \ufffd\n",
"\n",
"196 \ufffd\n",
"\n",
"197 \ufffd\n",
"\n",
"198 \ufffd\n",
"\n",
"199 \ufffd\n",
"\n",
"200 \ufffd\n",
"\n",
"201 \ufffd\n",
"\n",
"202 \ufffd\n",
"\n",
"203 \ufffd\n",
"\n",
"204 \ufffd\n",
"\n",
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"\n",
"206 \ufffd\n",
"\n",
"207 \ufffd\n",
"\n",
"208 \ufffd\n",
"\n",
"209 \ufffd\n",
"\n",
"210 \ufffd\n",
"\n",
"211 \ufffd\n",
"\n",
"212 \ufffd\n",
"\n",
"213 \ufffd\n",
"\n",
"214 \ufffd\n",
"\n",
"215 \ufffd\n",
"\n",
"216 \ufffd\n",
"\n",
"217 \ufffd\n",
"\n",
"218 \ufffd\n",
"\n",
"219 \ufffd\n",
"\n",
"220 \ufffd\n",
"\n",
"221 \ufffd\n",
"\n",
"222 \ufffd\n",
"\n",
"223 \ufffd\n",
"\n",
"224 \ufffd\n",
"\n",
"225 \ufffd\n",
"\n",
"226 \ufffd\n",
"\n",
"227 \ufffd\n",
"\n",
"228 \ufffd\n",
"\n",
"229 \ufffd\n",
"\n",
"230 \ufffd\n",
"\n",
"231 \ufffd\n",
"\n",
"232 \ufffd\n",
"\n",
"233 \ufffd\n",
"\n",
"234 \ufffd\n",
"\n",
"235 \ufffd\n",
"\n",
"236 \ufffd\n",
"\n",
"237 \ufffd\n",
"\n",
"238 \ufffd\n",
"\n",
"239 \ufffd\n",
"\n",
"240 \ufffd\n",
"\n",
"241 \ufffd\n",
"\n",
"242 \ufffd\n",
"\n",
"243 \ufffd\n",
"\n",
"244 \ufffd\n",
"\n",
"245 \ufffd\n",
"\n",
"246 \ufffd\n",
"\n",
"247 \ufffd\n",
"\n",
"248 \ufffd\n",
"\n",
"249 \ufffd\n",
"\n",
"250 \ufffd\n",
"\n",
"251 \ufffd\n",
"\n",
"252 \ufffd\n",
"\n",
"253 \ufffd\n",
"\n",
"254 \ufffd\n",
"\n",
"255 \ufffd\n",
"\n"
]
}
],
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},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"EXAMPLE ON PAGE:200"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
" \n",
"for ch in range(0,255,1):\n",
" print \"%d %c\\n\" % (ch,ch)\n",
"print \"%d %c\\n\" % (ch,ch)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"0 \u0000\n",
"\n",
"1 \u0001\n",
"\n",
"2 \u0002\n",
"\n",
"3 \u0003\n",
"\n",
"4 \u0004\n",
"\n",
"5 \u0005\n",
"\n",
"6 \u0006\n",
"\n",
"7 \u0007\n",
"\n",
"8 \b\n",
"\n",
"9 \t\n",
"\n",
"10 \n",
"\n",
"\n",
"11 \u000b",
"\n",
"\n",
"12 \f",
"\n",
"\n",
"13 \r\n",
"\n",
"14 \u000e\n",
"\n",
"15 \u000f\n",
"\n",
"16 \u0010\n",
"\n",
"17 \u0011\n",
"\n",
"18 \u0012\n",
"\n",
"19 \u0013\n",
"\n",
"20 \u0014\n",
"\n",
"21 \u0015\n",
"\n",
"22 \u0016\n",
"\n",
"23 \u0017\n",
"\n",
"24 \u0018\n",
"\n",
"25 \u0019\n",
"\n",
"26 \u001a\n",
"\n",
"27 \u001b\n",
"\n",
"28 \u001c",
"\n",
"\n",
"29 \u001d",
"\n",
"\n",
"30 \u001e",
"\n",
"\n",
"31 \u001f\n",
"\n",
"32 \n",
"\n",
"33 !\n",
"\n",
"34 \"\n",
"\n",
"35 #\n",
"\n",
"36 $\n",
"\n",
"37 %\n",
"\n",
"38 &\n",
"\n",
"39 '\n",
"\n",
"40 (\n",
"\n",
"41 )\n",
"\n",
"42 *\n",
"\n",
"43 +\n",
"\n",
"44 ,\n",
"\n",
"45 -\n",
"\n",
"46 .\n",
"\n",
"47 /\n",
"\n",
"48 0\n",
"\n",
"49 1\n",
"\n",
"50 2\n",
"\n",
"51 3\n",
"\n",
"52 4\n",
"\n",
"53 5\n",
"\n",
"54 6\n",
"\n",
"55 7\n",
"\n",
"56 8\n",
"\n",
"57 9\n",
"\n",
"58 :\n",
"\n",
"59 ;\n",
"\n",
"60 <\n",
"\n",
"61 =\n",
"\n",
"62 >\n",
"\n",
"63 ?\n",
"\n",
"64 @\n",
"\n",
"65 A\n",
"\n",
"66 B\n",
"\n",
"67 C\n",
"\n",
"68 D\n",
"\n",
"69 E\n",
"\n",
"70 F\n",
"\n",
"71 G\n",
"\n",
"72 H\n",
"\n",
"73 I\n",
"\n",
"74 J\n",
"\n",
"75 K\n",
"\n",
"76 L\n",
"\n",
"77 M\n",
"\n",
"78 N\n",
"\n",
"79 O\n",
"\n",
"80 P\n",
"\n",
"81 Q\n",
"\n",
"82 R\n",
"\n",
"83 S\n",
"\n",
"84 T\n",
"\n",
"85 U\n",
"\n",
"86 V\n",
"\n",
"87 W\n",
"\n",
"88 X\n",
"\n",
"89 Y\n",
"\n",
"90 Z\n",
"\n",
"91 [\n",
"\n",
"92 \\\n",
"\n",
"93 ]\n",
"\n",
"94 ^\n",
"\n",
"95 _\n",
"\n",
"96 `\n",
"\n",
"97 a\n",
"\n",
"98 b\n",
"\n",
"99 c\n",
"\n",
"100 d\n",
"\n",
"101 e\n",
"\n",
"102 f\n",
"\n",
"103 g\n",
"\n",
"104 h\n",
"\n",
"105 i\n",
"\n",
"106 j\n",
"\n",
"107 k\n",
"\n",
"108 l\n",
"\n",
"109 m\n",
"\n",
"110 n\n",
"\n",
"111 o\n",
"\n",
"112 p\n",
"\n",
"113 q\n",
"\n",
"114 r\n",
"\n",
"115 s\n",
"\n",
"116 t\n",
"\n",
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"\n",
"118 v\n",
"\n",
"119 w\n",
"\n",
"120 x\n",
"\n",
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"\n",
"122 z\n",
"\n",
"123 {\n",
"\n",
"124 |\n",
"\n",
"125 }\n",
"\n",
"126 ~\n",
"\n",
"127 \u007f\n",
"\n",
"128 \ufffd\n",
"\n",
"129 \ufffd\n",
"\n",
"130 \ufffd\n",
"\n",
"131 \ufffd\n",
"\n",
"132 \ufffd\n",
"\n",
"133 \ufffd\n",
"\n",
"134 \ufffd\n",
"\n",
"135 \ufffd\n",
"\n",
"136 \ufffd\n",
"\n",
"137 \ufffd\n",
"\n",
"138 \ufffd\n",
"\n",
"139 \ufffd\n",
"\n",
"140 \ufffd\n",
"\n",
"141 \ufffd\n",
"\n",
"142 \ufffd\n",
"\n",
"143 \ufffd\n",
"\n",
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"\n",
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"\n",
"146 \ufffd\n",
"\n",
"147 \ufffd\n",
"\n",
"148 \ufffd\n",
"\n",
"149 \ufffd\n",
"\n",
"150 \ufffd\n",
"\n",
"151 \ufffd\n",
"\n",
"152 \ufffd\n",
"\n",
"153 \ufffd\n",
"\n",
"154 \ufffd\n",
"\n",
"155 \ufffd\n",
"\n",
"156 \ufffd\n",
"\n",
"157 \ufffd\n",
"\n",
"158 \ufffd\n",
"\n",
"159 \ufffd\n",
"\n",
"160 \ufffd\n",
"\n",
"161 \ufffd\n",
"\n",
"162 \ufffd\n",
"\n",
"163 \ufffd\n",
"\n",
"164 \ufffd\n",
"\n",
"165 \ufffd\n",
"\n",
"166 \ufffd\n",
"\n",
"167 \ufffd\n",
"\n",
"168 \ufffd\n",
"\n",
"169 \ufffd\n",
"\n",
"170 \ufffd\n",
"\n",
"171 \ufffd\n",
"\n",
"172 \ufffd\n",
"\n",
"173 \ufffd\n",
"\n",
"174 \ufffd\n",
"\n",
"175 \ufffd\n",
"\n",
"176 \ufffd\n",
"\n",
"177 \ufffd\n",
"\n",
"178 \ufffd\n",
"\n",
"179 \ufffd\n",
"\n",
"180 \ufffd\n",
"\n",
"181 \ufffd\n",
"\n",
"182 \ufffd\n",
"\n",
"183 \ufffd\n",
"\n",
"184 \ufffd\n",
"\n",
"185 \ufffd\n",
"\n",
"186 \ufffd\n",
"\n",
"187 \ufffd\n",
"\n",
"188 \ufffd\n",
"\n",
"189 \ufffd\n",
"\n",
"190 \ufffd\n",
"\n",
"191 \ufffd\n",
"\n",
"192 \ufffd\n",
"\n",
"193 \ufffd\n",
"\n",
"194 \ufffd\n",
"\n",
"195 \ufffd\n",
"\n",
"196 \ufffd\n",
"\n",
"197 \ufffd\n",
"\n",
"198 \ufffd\n",
"\n",
"199 \ufffd\n",
"\n",
"200 \ufffd\n",
"\n",
"201 \ufffd\n",
"\n",
"202 \ufffd\n",
"\n",
"203 \ufffd\n",
"\n",
"204 \ufffd\n",
"\n",
"205 \ufffd\n",
"\n",
"206 \ufffd\n",
"\n",
"207 \ufffd\n",
"\n",
"208 \ufffd\n",
"\n",
"209 \ufffd\n",
"\n",
"210 \ufffd\n",
"\n",
"211 \ufffd\n",
"\n",
"212 \ufffd\n",
"\n",
"213 \ufffd\n",
"\n",
"214 \ufffd\n",
"\n",
"215 \ufffd\n",
"\n",
"216 \ufffd\n",
"\n",
"217 \ufffd\n",
"\n",
"218 \ufffd\n",
"\n",
"219 \ufffd\n",
"\n",
"220 \ufffd\n",
"\n",
"221 \ufffd\n",
"\n",
"222 \ufffd\n",
"\n",
"223 \ufffd\n",
"\n",
"224 \ufffd\n",
"\n",
"225 \ufffd\n",
"\n",
"226 \ufffd\n",
"\n",
"227 \ufffd\n",
"\n",
"228 \ufffd\n",
"\n",
"229 \ufffd\n",
"\n",
"230 \ufffd\n",
"\n",
"231 \ufffd\n",
"\n",
"232 \ufffd\n",
"\n",
"233 \ufffd\n",
"\n",
"234 \ufffd\n",
"\n",
"235 \ufffd\n",
"\n",
"236 \ufffd\n",
"\n",
"237 \ufffd\n",
"\n",
"238 \ufffd\n",
"\n",
"239 \ufffd\n",
"\n",
"240 \ufffd\n",
"\n",
"241 \ufffd\n",
"\n",
"242 \ufffd\n",
"\n",
"243 \ufffd\n",
"\n",
"244 \ufffd\n",
"\n",
"245 \ufffd\n",
"\n",
"246 \ufffd\n",
"\n",
"247 \ufffd\n",
"\n",
"248 \ufffd\n",
"\n",
"249 \ufffd\n",
"\n",
"250 \ufffd\n",
"\n",
"251 \ufffd\n",
"\n",
"252 \ufffd\n",
"\n",
"253 \ufffd\n",
"\n",
"254 \ufffd\n",
"\n",
"254 \ufffd\n",
"\n"
]
}
],
"prompt_number": 3
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"EXAMPLE ON PAGE:200-201"
]
},
{
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"input": [
" \n",
" \n",
"c=raw_input()\n",
"d=raw_input()\n",
"print \"%c %c\\n\" % (c,d)\n",
"#int\n",
"i=eval(raw_input())\n",
"j=eval(raw_input())\n",
"print \"%d %u\\n\" % (i,j)\n",
"#short int\n",
"k=eval(raw_input())\n",
"l=eval(raw_input())\n",
"print \"%d %u\\n\" % (k,l)\n",
"#long int\n",
"m=eval(raw_input())\n",
"n=eval(raw_input())\n",
"print \"%ld %lu\\n\" % (m,n)\n",
"#float,double,long double\n",
"x=eval(raw_input())\n",
"y=eval(raw_input())\n",
"z=eval(raw_input())\n",
"print \"%f %lf %Lf\\n\" % (x,y,z)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"a\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"b\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"a b\n",
"\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"10000\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"7389\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"10000 7389\n",
"\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"34\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"585\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"34 585\n",
"\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"34676\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"500000\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"34676 500000\n",
"\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"445.55\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"57846.44\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"55666885.6655\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"445.550000 57846.440000 55666885.665500\n",
"\n"
]
}
],
"prompt_number": 3
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"EXAMPLE ON PAGE:205"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
" \n",
"def main():\n",
" i=1\n",
" def main2():\n",
" def main3():\n",
" print \"%d\" % (i) #prints 1\n",
" main3()\n",
" print \"%d\" % (i) #prints 1\n",
" main2()\n",
" print \"%d\\n\" % (i) #prints 1\n",
"main()"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"1\n",
"1\n",
"1\n",
"\n"
]
}
],
"prompt_number": 4
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"EXAMPLE ON PAGE:205"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
" \n",
"def main():\n",
" i=1\n",
" def main2():\n",
" i=2\n",
" def main3():\n",
" i=3\n",
" print \"%d\" % (i) #prints 3\n",
" main3()\n",
" print \"%d\" % (i) #prints 2\n",
" main2()\n",
" print \"%d\\n\" % (i) #prints 1\n",
"main()"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"3\n",
"2\n",
"1\n",
"\n"
]
}
],
"prompt_number": 5
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"EXAMPLE ON PAGE:206"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
" \n",
"for i in range(1,11,1):\n",
" print \"%d\\n\" % (i)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"1\n",
"\n",
"2\n",
"\n",
"3\n",
"\n",
"4\n",
"\n",
"5\n",
"\n",
"6\n",
"\n",
"7\n",
"\n",
"8\n",
"\n",
"9\n",
"\n",
"10\n",
"\n"
]
}
],
"prompt_number": 6
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"EXAMPLE ON PAGE:208"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
" \n",
"def increment():\n",
" i=1\n",
" print \"%d\\n\" % (i) #prints 1 every time\n",
" i=i+1\n",
"increment()\n",
"increment()\n",
"increment()"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"1\n",
"\n",
"1\n",
"\n",
"1\n",
"\n"
]
}
],
"prompt_number": 7
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"EXAMPLE ON PAGE:208"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
" \n",
"def static_var(varname, value): #function to make it static\n",
" def decorate(func):\n",
" setattr(func, varname, value)\n",
" return func\n",
" return decorate\n",
"@static_var(\"i\", 1) #i is static variable\n",
"def increment():\n",
" print \"%d\\n\" % increment.i\n",
" increment.i += 1\n",
"increment()\n",
"increment()\n",
"increment()"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"1\n",
"\n",
"2\n",
"\n",
"3\n",
"\n"
]
}
],
"prompt_number": 8
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"EXAMPLE ON PAGE:209"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
" \n",
"def fun():\n",
" k=35\n",
" return id(k) #returns address of k\n",
"j=fun() #stores address of k\n",
"print \"%d\\n\" % (j) #prints address of k"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"19639600\n",
"\n"
]
}
],
"prompt_number": 9
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"EXAMPLE ON PAGE:210"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
" \n",
"def increment():\n",
" global i #gloabal declaration\n",
" i=i+1\n",
" print \"on incrementing i=%d\\n\" % (i)\n",
"def decrement():\n",
" global i #global declaration\n",
" i=i-1\n",
" print \"on decrementing i=%d\\n\" % (i)\n",
"i=0\n",
"print \"\\ni=%d\" % (i)\n",
"increment()\n",
"increment()\n",
"decrement()\n",
"decrement()"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"i=0\n",
"on incrementing i=1\n",
"\n",
"on incrementing i=2\n",
"\n",
"on decrementing i=1\n",
"\n",
"on decrementing i=0\n",
"\n"
]
}
],
"prompt_number": 10
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"EXAMPLE ON PAGE:211"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
" \n",
"x=21\n",
"def main():\n",
" global x,y\n",
" print \"%d %d\\n\" % (x,y)\n",
"y=31\n",
"main()"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"21 31\n",
"\n"
]
}
],
"prompt_number": 11
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"EXAMPLE ON PAGE:211"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
" \n",
"def display():\n",
" global x #global variable\n",
" print \"%d\\n\" % (x) #prints 10\n",
"x=10\n",
"def main():\n",
" x=20 #local variable for main\n",
" print \"%d\\n\" % (x) #prints 20\n",
" display()\n",
"main()"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"20\n",
"\n",
"10\n",
"\n"
]
}
],
"prompt_number": 12
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"EXAMPLE ON PAGE:212-213"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
" \n",
"def fun1():\n",
" global i\n",
" i+=1\n",
" print \"%d\\n\" % (i)\n",
"def fun2():\n",
" global i\n",
" i-=1\n",
" print \"%d\\n\" % (i)\n",
"i=35\n",
"print \"%d\\n\" % (i)\n",
"fun1()\n",
"fun2()"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"35\n",
"\n",
"36\n",
"\n",
"35\n",
"\n"
]
}
],
"prompt_number": 13
}
],
"metadata": {}
}
]
}