documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333 Building master branch documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334 3.5 Contributing – How to build the pandas documentation * Requirements * Building the documentation * Building master branch documentation • Contributing to the code base – Code standards – Test-driven development/code also identify improvements made since previous versions. Trying the bug-producing code out on the master branch is often a worthwhile exercise to confirm the bug still exists. It is also worth searching

documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335 Building master branch documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336 3.5 Contributing – How to build the pandas documentation * Requirements * Building the documentation * Building master branch documentation • Contributing to the code base – Code standards – Test-driven development/code also identify improvements made since previous versions. Trying the bug-producing code out on the master branch is often a worthwhile exercise to confirm the bug still exists. It is also worth searching

330877 8.4583 NaN Q 6 7 0 1 McCarthy, Mr. Timothy J . ˓→.. 17463 51.8625 E46 S 7 8 0 3 Palsson, Master. Gosta Leonard . ˓→.. 349909 21.0750 NaN S [8 rows x 12 columns] To see the first N rows of a 373450 8.0500 NaN S 5 6 0 3 Moran, Mr. James male ... 0 ˓→ 330877 8.4583 NaN Q 7 8 0 3 Palsson, Master. Gosta Leonard male ... 1 ˓→ 349909 21.0750 NaN S [5 rows x 12 columns] Similar to the conditional 373450 8.0500 NaN S 5 6 0 3 Moran, Mr. James male ... 0 ˓→ 330877 8.4583 NaN Q 7 8 0 3 Palsson, Master. Gosta Leonard male ... 1 ˓→ 349909 21.0750 NaN S [5 rows x 12 columns] 1.4. Tutorials 25 pandas:

4583 NaN Q 6 7 0 1 McCarthy, Mr. Timothy J ␣ ˓→male ... 0 17463 51.8625 E46 S 7 8 0 3 Palsson, Master. Gosta Leonard ␣ ˓→male ... 1 349909 21.0750 NaN S [8 rows x 12 columns] To see the first N rows 373450 8.0500 NaN S 5 6 0 3 Moran, Mr. James male NaN 0 ␣ ˓→ 0 330877 8.4583 NaN Q 7 8 0 3 Palsson, Master. Gosta Leonard male 2.0 3 ␣ ˓→ 1 349909 21.0750 NaN S Similar to the conditional expression, the powerful Python data analysis toolkit, Release 1.3.3 (continued from previous page) 7 8 0 3 Palsson, Master. Gosta Leonard male 2.0 3 ␣ ˓→ 1 349909 21.0750 NaN S Note: When combining multiple conditional

4583 NaN Q 6 7 0 1 McCarthy, Mr. Timothy J ␣ ˓→male 54.0 0 0 17463 51.8625 E46 S 7 8 0 3 Palsson, Master. Gosta Leonard ␣ ˓→male 2.0 3 1 349909 21.0750 NaN S To see the first N rows of a DataFrame, use 373450 8.0500 NaN S 5 6 0 3 Moran, Mr. James male NaN 0 ␣ ˓→ 0 330877 8.4583 NaN Q 7 8 0 3 Palsson, Master. Gosta Leonard male 2.0 3 ␣ ˓→ 1 349909 21.0750 NaN S Similar to the conditional expression, the 373450 8.0500 NaN S 5 6 0 3 Moran, Mr. James male NaN 0 ␣ ˓→ 0 330877 8.4583 NaN Q 7 8 0 3 Palsson, Master. Gosta Leonard male 2.0 3 ␣ ˓→ 1 349909 21.0750 NaN S 1.4. Tutorials 25 pandas: powerful Python

the documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 383 3.4.2.3 Building master branch documentation . . . . . . . . . . . . . . . . . . . . . . . . 384 3.5 Contributing to the 'https://github.com/{repo}/raw/{branch}/{path}'.format( ....: repo = 'pandas-dev/pandas', ....: branch = 'master', ....: path = 'pandas/tests/io/parser/data/salaries.csv.bz2', ....: ) ....: In [22]: df = pd – How to build the pandas documentation * Requirements * Building the documentation * Building master branch documentation • Contributing to the code base – Code standards * C (cpplint) * Python

the documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 381 3.4.2.3 Building master branch documentation . . . . . . . . . . . . . . . . . . . . . . . . 382 3.5 Contributing to the 'https://github.com/{repo}/raw/{branch}/{path}'.format( ....: repo = 'pandas-dev/pandas', ....: branch = 'master', ....: path = 'pandas/tests/io/parser/data/salaries.csv.bz2', ....: ) ....: In [22]: df = pd – How to build the pandas documentation * Requirements * Building the documentation * Building master branch documentation • Contributing to the code base – Code standards * C (cpplint) * Python

the documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 411 3.4.2.3 Building master branch documentation . . . . . . . . . . . . . . . . . . . . . . . . 412 3.5 Contributing to the 'https://github.com/{repo}/raw/{branch}/{path}'.format( ....: repo = 'pandas-dev/pandas', ....: branch = 'master', ....: path = 'pandas/tests/io/parser/data/salaries.csv.bz2', ....: ) ....: In [22]: df = pd – How to build the pandas documentation * Requirements * Building the documentation * Building master branch documentation • Contributing to the code base – Code standards * C (cpplint) * Python

of the same name and structure. In [3]: url = ('https://raw.github.com/pandas-dev' ...: '/pandas/master/pandas/tests/data/tips.csv') ...: In [4]: tips = pd.read_csv(url) (continues on next page) 2 read_csv(), which works similarly. In [5]: url = ('https://raw.github.com/pandas-dev/' ...: 'pandas/master/pandas/tests/data/tips.csv') ...: In [6]: tips = pd.read_csv(url) In [7]: tips.head() Out[7]: data set if presented with a url. In [5]: url = ('https://raw.github.com/pandas-dev' ...: '/pandas/master/pandas/tests/data/tips.csv') ...: In [6]: tips = pd.read_csv(url) In [7]: tips.head() Out[7]:

4583 NaN Q 6 7 0 1 McCarthy, Mr. Timothy J ˓→ male ... 0 17463 51.8625 E46 S 7 8 0 3 Palsson, Master. Gosta Leonard ˓→ male ... 1 349909 21.0750 NaN S [8 rows x 12 columns] To see the first N rows 373450 8.0500 NaN S 5 6 0 3 Moran, Mr. James male NaN 0 ˓→ 0 330877 8.4583 NaN Q 7 8 0 3 Palsson, Master. Gosta Leonard male 2.0 3 ˓→ 1 349909 21.0750 NaN S Similar to the conditional expression, the 373450 8.0500 NaN S 5 6 0 3 Moran, Mr. James male NaN 0 ˓→ 0 330877 8.4583 NaN Q 7 8 0 3 Palsson, Master. Gosta Leonard male 2.0 3 ˓→ 1 349909 21.0750 NaN S Note: When combining multiple conditional statements