# coding=utf-8
import pandas as pd
from matplotlib import pyplot as plt
file_path = "./IMDB-Movie-Data.csv"

df = pd.read_csv(file_path)
# print(df.head(1))
# print(df.info())

#rating,runtime分布情况
#选择图形，直方图
#准备数据
runtime_data = df["Rating"].values

max_runtime = runtime_data.max()
min_runtime = runtime_data.min()

#计算组数
print(max_runtime-min_runtime)
num_bin = (max_runtime-min_runtime)//0.5


#设置图形的大小
plt.figure(figsize=(20,8),dpi=80)
plt.hist(runtime_data,num_bin)
 
_x = [min_runtime]
i = min_runtime
while i<=max_runtime+0.5:
    i = i+0.5
    _x.append(i)

plt.xticks(_x)

plt.show()
