{
"cells": [
{
"cell_type": "code",
"execution_count": 1,
"metadata": {},
"outputs": [
{
"ename": "TypeError",
"evalue": "'tuple' object does not support item assignment",
"output_type": "error",
"traceback": [
"\u001b[1;31m\u001b[0m",
"\u001b[1;31mTypeError\u001b[0mTraceback (most recent call last)",
"\u001b[1;32m<ipython-input-1-b2533e01f223>\u001b[0m in \u001b[0;36m<module>\u001b[1;34m()\u001b[0m\n\u001b[0;32m 1\u001b[0m \u001b[0mMATH_CONST_VALUE\u001b[0m\u001b[1;33m=\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;36m3.1415\u001b[0m\u001b[1;33m,\u001b[0m\u001b[1;36m2.71828\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m----> 2\u001b[1;33m \u001b[0mMATH_CONST_VALUE\u001b[0m\u001b[1;33m[\u001b[0m\u001b[1;36m1\u001b[0m\u001b[1;33m]\u001b[0m\u001b[1;33m=\u001b[0m\u001b[1;36m2.7\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m",
"\u001b[1;31mTypeError\u001b[0m: 'tuple' object does not support item assignment"
]
}
],
"source": [
"MATH_CONST_VALUE=(3.1415,2.71828)\n",
"MATH_CONST_VALUE[1]=2.7"
]
},
{
"cell_type": "code",
"execution_count": 4,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"([3.14], [2.71828])\n"
]
}
],
"source": [
"MATH_CONST_VALUE=([3.1415],[2.71828])\n",
"MATH_CONST_VALUE[0][0]=3.14\n",
"print MATH_CONST_VALUE"
]
},
{
"cell_type": "code",
"execution_count": 5,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"AACAAACAA\n"
]
}
],
"source": [
"print \"AACBBBCAA\".replace(\"BBB\",\"AAA\")"
]
},
{
"cell_type": "code",
"execution_count": 8,
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"1"
]
},
"execution_count": 8,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"cmp(\"beiping\",\"beijing\")"
]
},
{
"cell_type": "code",
"execution_count": 9,
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"2"
]
},
"execution_count": 9,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"\"China Beijing\".find(\"i\")"
]
},
{
"cell_type": "code",
"execution_count": 10,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Bill Gates\n",
"BILL GATES\n",
"bill gates\n"
]
}
],
"source": [
"name=\"Bill gates\"\n",
"print name.title()\n",
"print name.upper()\n",
"print name.lower()"
]
},
{
"cell_type": "code",
"execution_count": 11,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"China,Beijing,Chaoyang\n",
"China,Beijing,Chaoyang \n",
" China,Beijing,Chaoyang\n"
]
}
],
"source": [
"print \" China,Beijing,Chaoyang \".strip()\n",
"print \" China,Beijing,Chaoyang \".lstrip()\n",
"print \" China,Beijing,Chaoyang \".rstrip()"
]
},
{
"cell_type": "code",
"execution_count": 12,
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"[' China', 'Beijing', 'Chaoyang ']"
]
},
"execution_count": 12,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"\" China,Beijing,Chaoyang \".split(\",\")"
]
},
{
"cell_type": "code",
"execution_count": 13,
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"[' Ch', 'na,Be', 'j', 'ng,Chaoyang ']"
]
},
"execution_count": 13,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"\" China,Beijing,Chaoyang \".split(\"i\")"
]
},
{
"cell_type": "code",
"execution_count": 14,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[99, 103, 98, 102, 123, 456]\n",
"None\n"
]
},
{
"ename": "KeyError",
"evalue": "'150718'",
"output_type": "error",
"traceback": [
"\u001b[1;31m\u001b[0m",
"\u001b[1;31mKeyError\u001b[0mTraceback (most recent call last)",
"\u001b[1;32m<ipython-input-14-97871591f1e0>\u001b[0m in \u001b[0;36m<module>\u001b[1;34m()\u001b[0m\n\u001b[0;32m 5\u001b[0m \u001b[0mk\u001b[0m\u001b[1;33m=\u001b[0m\u001b[0mk\u001b[0m\u001b[1;33m+\u001b[0m\u001b[1;36m1\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 6\u001b[0m \u001b[1;32mprint\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mmydict\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mget\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;33m`\u001b[0m\u001b[0mk\u001b[0m\u001b[1;33m`\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m----> 7\u001b[1;33m \u001b[1;32mprint\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mmydict\u001b[0m\u001b[1;33m[\u001b[0m\u001b[1;33m`\u001b[0m\u001b[0mk\u001b[0m\u001b[1;33m`\u001b[0m\u001b[1;33m]\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m",
"\u001b[1;31mKeyError\u001b[0m: '150718'"
]
}
],
"source": [
"mydict={}\n",
"k=150717\n",
"mydict[`k`]=[99,103,98,102,123,456]\n",
"print(mydict[`k`])\n",
"k=k+1\n",
"print(mydict.get(`k`))\n",
"print(mydict[`k`])"
]
},
{
"cell_type": "code",
"execution_count": 17,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"{106: ['Mark', '3465774'], 107: ['Lary', '8936274'], 101: ['tim', '0:444689-202,F:34587349'], 102: ['Yuri', '3424243'], 103: ['John', '0:3243141,H:8925738']}\n",
"Keys:\n",
"[106, 107, 101, 102, 103]\n",
"Key-Value\n",
"[(106, ['Mark', '3465774']), (107, ['Lary', '8936274']), (101, ['tim', '0:444689-202,F:34587349']), (102, ['Yuri', '3424243']), (103, ['John', '0:3243141,H:8925738'])]\n"
]
}
],
"source": [
"my_empo_dict={101:['tim','0:444689-202,F:34587349'],102:['Yuri','3424243'],103:['John','0:3243141,H:8925738']}\n",
"my_empo_dict[106]=['Mark','3465774']\n",
"my_empo_dict.update({107:['Lary','8936274']})\n",
"print my_empo_dict\n",
"print\"Keys:\"\n",
"print my_empo_dict.keys()\n",
"print\"Key-Value\"\n",
"print my_empo_dict.items()"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"S = {123, 'sed', (10, 'cs'), 43}"
]
},
{
"cell_type": "code",
"execution_count": 19,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"set(['a', 'p', 'e', 'l'])\n",
"set(['tiger', 'dog', 'human', 'cat'])\n"
]
}
],
"source": [
"W = set(\"apple\")\n",
"V = set(('dog','cat','tiger','human'))\n",
"print W\n",
"print V"
]
},
{
"cell_type": "code",
"execution_count": 20,
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"True"
]
},
"execution_count": 20,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"\"BIT\" in {123, \"BIT\", \"ok\", \"test\"}"
]
},
{
"cell_type": "code",
"execution_count": 21,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"set(['test', 'BIT', 123, 'ok'])\n",
"('BIT', 123, 'ok')\n"
]
}
],
"source": [
"tup = (123,\"BIT\", \"ok\", \"test\", 123)\n",
"print set(tup)\n",
"newtup = tuple(set(tup)-{\"test\"})\n",
"print newtup\n"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": []
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 2",
"language": "python",
"name": "python2"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 2
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython2",
"version": "2.7.14"
}
},
"nbformat": 4,
"nbformat_minor": 2
}