df=pd.DataFrame({"A":1,"B":pd.Timestamp("20170301","C":pd.Series(1,index=list(range(4)),dtype="float32"),"D":np.array([3]*4,dtype="float32"),"E":pd.Categorical(["police","student","teacher","doctor"])}) ^
SyntaxError: invalid syntax
"C":pd.Series(1,index=list(range(4)),dtype="float32"),一段显示“variables annotation cannot be combined with tuple unpacking”
2019-06-08
建议在pycharm里编写，方便debug
很明显你的这段代码是在这里有错：
B":pd.Timestamp("20170301","C":应该修改为：
B":pd.Timestamp("20170301"),"C":建议用pycharm编写，方便debug
这一段正确的代码应该是这样的：
df = pd.DataFrame({ "A": 1,
"B": pd.Timestamp("20170301"),
"C": pd.Series(1, index=list(range(4)), dtype="float"),
"D": np.array([3] * 4, dtype="float32"),
"E": pd.Categorical(["police", "student", "teacher", "doctor"])})举报
