STY used autopep8, minor changes

Solertis · Aug 9, 2017 · 7f33410 · 7f33410
1 parent be18fed
commit 7f33410
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Showing 4 changed files with 9 additions and 7 deletions.
diff --git a/alphalens/performance.py b/alphalens/performance.py
@@ -226,7 +226,7 @@ def factor_alpha_beta(factor_data, long_short=True):
         alpha, beta = reg_fit.params
 
         alpha_beta.loc['Ann. alpha', period] = \
-            (1 + alpha) ** (252.0/period) - 1
+            (1 + alpha) ** (252.0 / period) - 1
         alpha_beta.loc['beta', period] = beta
 
     return alpha_beta

diff --git a/alphalens/plotting.py b/alphalens/plotting.py
@@ -729,7 +729,7 @@ def plot_cumulative_returns(factor_returns, period=1, ax=None):
             factor_returns,
             period,
             # compound returns
-            lambda ret, period: ((np.nanmean(ret) + 1)**(1./period)) - 1,
+            lambda ret, period: ((np.nanmean(ret) + 1)**(1. / period)) - 1,
             min_periods=1,
             args=(period,))
 
@@ -773,7 +773,7 @@ def plot_cumulative_returns_by_quantile(quantile_returns, period=1, ax=None):
             ret_wide,
             period,
             # compound returns
-            lambda ret, period: ((np.nanmean(ret) + 1)**(1./period)) - 1,
+            lambda ret, period: ((np.nanmean(ret) + 1)**(1. / period)) - 1,
             min_periods=1,
             args=(period,))
 

diff --git a/alphalens/tears.py b/alphalens/tears.py
@@ -218,7 +218,7 @@ def create_returns_tear_sheet(factor_data, long_short=True, by_group=False):
         std_err=std_spread_quant,
         bandwidth=0.5,
         ax=ax_mean_quantile_returns_spread_ts
-        )
+    )
 
     if by_group:
         mean_return_quantile_group, mean_return_quantile_group_std_err = \
@@ -417,8 +417,10 @@ def create_event_returns_tear_sheet(factor_data,
     """
 
     before, after = avgretplot
-    after = max(after,
-                max(utils.get_forward_returns_columns(factor_data.columns))+1)
+    after = max(
+        after, max(
+            utils.get_forward_returns_columns(
+                factor_data.columns)) + 1)
 
     avg_cumulative_returns = \
         perf.average_cumulative_return_by_quantile(

diff --git a/alphalens/utils.py b/alphalens/utils.py
@@ -453,7 +453,7 @@ def rate_of_return(period_ret):
     """
     1-period Growth Rate: the average rate of 1-period returns
     """
-    return period_ret.add(1).pow(1./period_ret.name).sub(1)
+    return period_ret.add(1).pow(1. / period_ret.name).sub(1)
 
 
 def std_conversion(period_std):