pandas读取文件（二）

import pandas

# df = pandas.read_csv("temp.csv");
# print(df)

# 自定义列名
# df = pandas.read_csv("temp.csv",
#                       names=['a', 'b', 'c', 'd', 'e'],
#                       header=0);
# print(df)

# 自定义索引
# df = pandas.read_csv("temp.csv",
#                      index_col=['S.No'])
# print(df)

# 读取电影房票
# df = pandas.read_csv("film.csv",
#                      delimiter=',',
#                      names=['date', 'filmname', 'BOR']);
# df = df.dropna()  # 去除“空值”的代码
# df = df.head()  # 默认获取前5行
# print(df)

# 筛选老男孩电影的票房
df = pandas.read_csv("film.csv",
                     delimiter=',',
                     names=['date', 'filmname', 'BOR']);
df = df.dropna()  # 去除“空值”的代码
df = df[(df.filmname == '老男孩')]
df = df.head()  # 默认获取前5行
print(df)
print("-------------------------------------------------------------------")

# 筛选制定日期的数据
df = pandas.read_csv("film.csv",
                     delimiter=',',
                     names=['date', 'filmname', 'BOR']);
df = df.dropna()  # 去除“空值”的代码
# 将放映日期标签转为日期类型
df['date'] = pandas.to_datetime(df['date'])
# 指定具体的日期范围
df = df.loc[(df['date'] > '2010-5-15') & (df['date'] <= '2010-5-31')]
df = df.head()  # 默认获取前5行
print(df)
print("------------------------------------------------------------------")

# 筛选票房数据“>1600”且名称为“老男孩”或“剑雨”的数据行
df = pandas.read_csv("film.csv",
                     delimiter=',',
                     names=['date', 'filmname', 'BOR']);
df = df.dropna()  # 去除“空值”的代码
df = df[(df["filmname"].isin(['老男孩', '剑雨'])) & (df['BOR'] > 1600)]
df = df.head()  # 默认获取前5行
print(df)

 2010-05-09,唐山大地震,51315.0
 2010-05-09,婚前试爱,5659.0
 2010-05-16,老男孩,1599.0
 2010-05-23,剑雨,2224.0
 2010-05-23,剑雨,
 2010-05-23,老男孩,1605.0
 2010-05-09,唐山大地震,51876.0
 2010-05-16,X战警-天启,102063.0
 2010-05-16,X战警-天启,102364.0
 2010-05-16,X战警-天启,102163.0
 2010-05-09,婚前试爱,5659.0
 2010-05-16,老男孩,
 2010-05-23,剑雨,2246.0
 2010-05-16,让子弹飞,
 2010-05-16,让子弹飞,
 2010-05-09,婚前试爱,5681.0
 2010-05-16,X战警-天启,102063.0
 2010-05-09,婚前试爱,5653.0
 2010-05-16,X战警-天启,
 2010-05-16,老男孩,1595.0
 2010-05-16,让子弹飞,106652.0
 2010-05-09,唐山大地震,51621.0
 2010-05-09,唐山大地震,51927.0
 2010-05-09,婚前试爱,5620.0
 2010-05-16,X战警-天启,101159.0
 2010-05-16,让子弹飞,
 2010-05-09,唐山大地震,51876.0
 2010-05-09,婚前试爱,5636.0
 2010-05-16,让子弹飞,
 2010-05-09,唐山大地震,51876.0
 2010-05-16,让子弹飞,106652.0
 2010-05-09,唐山大地震,51570.0
 2010-05-16,让子弹飞,106024.0
 2010-05-16,老男孩,
 2010-05-16,X战警-天启,100758.0
 2010-05-23,让子弹飞,106024.0
 2010-05-09,婚前试爱,5586.0
 2010-05-23,剑雨,
 2010-05-09,婚前试爱,5620.0
 2010-05-09,唐山大地震,51162.0
 2010-05-23,老男孩,1595.0
 2010-05-09,唐山大地震,51621.0
 2010-05-23,剑雨,2253.0
 2010-05-23,X战警-天启,101260.0
 2010-05-16,让子弹飞,105397.0
 2010-05-16,X战警-天启,101761.0
 2010-05-16,老男孩,1596.0
 2010-05-09,唐山大地震,
 2010-05-23,剑雨,2250.0
 2010-05-16,X战警-天启,101260.0
 2010-05-09,婚前试爱,
 2010-05-23,剑雨,2246.0
 2010-05-16,X战警-天启,101761.0
 2010-05-09,婚前试爱,
 2010-05-16,让子弹飞,105397.0
 2010-05-16,老男孩,
 2010-05-16,让子弹飞,106547.0
 2010-05-09,唐山大地震,51672.0
 2010-05-16,老男孩,1592.0
 2010-05-16,X战警-天启,102063.0
 2010-05-16,老男孩,1611.0
 2010-05-23,剑雨,2213.0
 2010-05-16,老男孩,1604.0
 2010-05-16,老男孩,1599.0
 2010-05-09,唐山大地震,
 2010-05-23,剑雨,
 2010-05-16,让子弹飞,
 2010-05-09,唐山大地震,51417.0
 2010-05-23,剑雨,
 2010-05-16,老男孩,1607.0
 2010-05-09,婚前试爱,5681.0
 2010-05-23,剑雨,2237.0
 2010-05-09,唐山大地震,51927.0
 2010-05-16,让子弹飞,105188.0
 2010-05-16,X战警-天启,102263.0
 2010-05-16,老男孩,
 2010-05-09,婚前试爱,5625.0
 2010-05-16,让子弹飞,106652.0
 2010-05-16,X战警-天启,
 2010-05-09,婚前试爱,5636.0
 2010-05-16,X战警-天启,
 2010-05-16,让子弹飞,104979.0
 2010-05-09,婚前试爱,
 2010-05-16,老男孩,
 2010-05-09,唐山大地震,51519.0
 2010-05-16,老男孩,1588.0
 2010-05-16,让子弹飞,106233.0
 2010-05-16,老男孩,1590.0
 2010-05-16,X战警-天启,100959.0
 2010-05-09,婚前试爱,5664.0
 2010-05-09,唐山大地震,
 2010-05-16,老男孩,1606.0
 2010-05-23,老男孩,1595.0
 2010-05-23,X战警-天启,100959.0