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Modif #13

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393c03f
basic data types & lists
alesamoila Jul 27, 2022
e5043b2
Merge pull request #1 from autrefois/master
alesamoila Jul 28, 2022
c1e56b9
list & dictionaries
alesamoila Jul 28, 2022
64f570f
dict
alesamoila Jul 28, 2022
e637e43
lastUpdateToday
alesamoila Jul 28, 2022
2d1f1ac
dictionaries done
alesamoila Jul 29, 2022
c261f81
Merge pull request #2 from alesamoila/newBranch
alesamoila Aug 2, 2022
048c7eb
08_pandas
alesamoila Aug 2, 2022
684610f
Merge branch 'autrefois:master' into master
alesamoila Aug 9, 2022
ac34939
Merge branch 'autrefois:master' into master
alesamoila Aug 10, 2022
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204 changes: 164 additions & 40 deletions 2022/python_workshop/notebooks/02_basic_data_types.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,13 @@
"- Built-in Functions"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": []
},
{
"cell_type": "markdown",
"metadata": {},
Expand Down Expand Up @@ -80,9 +87,29 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 1,
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"x_int = 10, y_int = 10\n",
"type of x_int: <class 'int'>\n",
"type of y_int: <class 'int'>\n",
"x_initial_identity = 2018793187920\n",
"y_initial_identity = 2018793187920\n",
"are they the same? True\n",
"x_int is y_int? True\n",
"does x_int have the same value as y_int? True\n",
"assigning new value to x\n",
"x_int = 11, y_int = 10\n",
"does x_int have the same value as y_int? False\n",
"x_initial_identity; 2018793187920\n",
"x_final_identity: 2018793187952\n"
]
}
],
"source": [
"# assign x a value and then assign x to y\n",
"x_int = 10\n",
Expand Down Expand Up @@ -136,9 +163,17 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 2,
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"sys.float_info(max=1.7976931348623157e+308, max_exp=1024, max_10_exp=308, min=2.2250738585072014e-308, min_exp=-1021, min_10_exp=-307, dig=15, mant_dig=53, epsilon=2.220446049250313e-16, radix=2, rounds=1)\n"
]
}
],
"source": [
"import sys\n",
"print(sys.float_info)"
Expand All @@ -154,24 +189,43 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 9,
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"you can't divide by zero!\n"
]
}
],
"source": [
"# let's try to divide by 0\n",
"# we will use a try-except block\n",
"\n",
"try:\n",
" x = 1 / 0\n",
"except ZeroDivisionError:\n",
" print(\"you can't divide by zero!\")"
" print(\"you can't divide by zero!\")\n",
"#raise Exception\n"
]
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 4,
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"2\n",
"2\n",
"result: 1.4; integer part: 1.0\n"
]
}
],
"source": [
"import math\n",
"# let's try an integer division - when the result is always an integer\n",
Expand All @@ -185,9 +239,18 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 10,
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"1\n",
"7.839999999999999\n"
]
}
],
"source": [
"# powers of x\n",
"print(0**0)\n",
Expand All @@ -196,9 +259,18 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 11,
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"<class 'int'>\n",
"<class 'float'>\n"
]
}
],
"source": [
"# type default conversion\n",
"print(type(2*2))\n",
Expand Down Expand Up @@ -265,9 +337,23 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 12,
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Peter Pan is a terrible boxer.\n",
"Whenever he throws a punch, it Neverlands\n",
"\n",
"I was wondering why the frisbee kept getting bigger and bigger.\n",
"But then it hit me.\n",
" Ba-dum tss.\n",
"\n"
]
}
],
"source": [
"one_liner = \"Peter Pan is a terrible boxer.\\nWhenever he throws a punch, it Neverlands\"\n",
"print(one_liner)\n",
Expand All @@ -282,42 +368,71 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 20,
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Neverlands\n"
]
}
],
"source": [
"# get the last word of that one-liner\n",
"one_liner = \"Peter Pan is a terrible boxer.\\nWhenever he throws a punch, it Neverlands\"\n",
"\n",
"# hint: look for the last space position\n",
"last_space_at = ...\n",
"\n",
"if last_space_at != -1:\n",
" # if there is a last space, get to the next character - that's where the last word starts\n",
" last_word_starts_at = ...\n",
" last_word = ...\n",
" print(last_word)\n",
"# but what of there is no space in this one_liner??\n",
"else:\n",
" # what would that mean?\n",
" print(...)\n",
"\n",
"# what if this one-liner was empty?\n",
"one_liner = \"\""
"last_space_at = one_liner.split(\" \")[-1]\n",
"print(last_space_at)\n",
"\n",
"# if last_space_at != -1:\n",
"# # if there is a last space, get to the next character - that's where the last word starts\n",
"# last_word_starts_at = ...\n",
"# last_word = ...\n",
"# print(last_word)\n",
"# # but what of there is no space in this one_liner??\n",
"# else:\n",
"# # what would that mean?\n",
"# print(...)\n",
"\n",
"# # what if this one-liner was empty?\n",
"# one_liner = \"\""
]
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 24,
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"\n",
"SELECT * FROM my_table WHERE date >= '2022-07-01 20:22:07';\n",
"\n",
"\n",
"SELECT * FROM my_table WHERE date >= '2022-07-01 20:22:07';\n",
"\n"
]
}
],
"source": [
"#import fnmatch\n",
"# replace the wildcard in the string with a value\n",
"statement = \"\"\"\n",
"SELECT * FROM my_table WHERE date >= $$start_date$$;\n",
"\"\"\"\n",
"start_date = \"'2022-07-01 20:22:07'\"\n",
"replaced_statement = ...\n",
"print(replaced_statement)"
"replaced_statement = \"\"\"\n",
"SELECT * FROM my_table WHERE date >= {};\n",
"\"\"\".format(start_date)\n",
"#fnmatch.translate( start_date)\n",
"replaced_statement2 = statement.replace(\"$$start_date$$\", start_date)\n",
"print(replaced_statement)\n",
"print(replaced_statement2)"
]
},
{
Expand Down Expand Up @@ -359,9 +474,18 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 25,
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"0\n",
"x evaluated to False\n"
]
}
],
"source": [
"# an empty (None) variable evaluates to False\n",
"x = int()\n",
Expand All @@ -382,7 +506,7 @@
],
"metadata": {
"kernelspec": {
"display_name": "Python 3.10.5 64-bit",
"display_name": "Python 3.9.12 ('base')",
"language": "python",
"name": "python3"
},
Expand All @@ -396,12 +520,12 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.10.5"
"version": "3.9.12"
},
"orig_nbformat": 4,
"vscode": {
"interpreter": {
"hash": "aee8b7b246df8f9039afb4144a1f6fd8d2ca17a180786b69acc140d282b71a49"
"hash": "d31b83e9610685068a0fe73b54051d44dc1110027bef1c52e64b671e72faac45"
}
}
},
Expand Down
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